CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2023-52619 – pstore/ram: Fix crash when setting number of cpus to an odd number
https://notcve.org/view.php?id=CVE-2023-52619
In the Linux kernel, the following vulnerability has been resolved: pstore/ram: Fix crash when setting number of cpus to an odd number When the number of cpu cores is adjusted to 7 or other odd numbers, the zone size will become an odd number. The address of the zone will become: addr of zone0 = BASE addr of zone1 = BASE + zone_size addr of zone2 = BASE + zone_size*2 ... The address of zone1/3/5/7 will be mapped to non-alignment va. Eventually crashes will occur when accessing these va. So, use ALIGN_DOWN() to make sure the zone size is even to avoid this bug. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pstore/ram: soluciona el fallo al establecer el número de CPU en un número impar. Cuando el número de núcleos de CPU se ajusta a 7 u otros números impares, el tamaño de la zona se convertirá en un número impar. La dirección de la zona se convertirá en: dirección de zona0 = BASE dirección de zona1 = BASE + tamaño_zona dirección de zona2 = BASE + tamaño_zona*2 ... La dirección de zona1/3/5/7 se asignará a va no alineada . • https://git.kernel.org/stable/c/8b69c30f4e8b69131d92096cb296dc1f217101e4 https://git.kernel.org/stable/c/e9f6ac50890104fdf8194f2865680689239d30fb https://git.kernel.org/stable/c/a63e48cd835c34c38ef671d344cc029b1ea5bf10 https://git.kernel.org/stable/c/2a37905d47bffec61e95d99f0c1cc5dc6377956c https://git.kernel.org/stable/c/75b0f71b26b3ad833c5c0670109c0af6e021e86a https://git.kernel.org/stable/c/0593cfd321df9001142a9d2c58d4144917dff7ee https://git.kernel.org/stable/c/cd40e43f870cf21726b22487a95ed223790b3542 https://git.kernel.org/stable/c/d49270a04623ce3c0afddbf3e984cb245 • CWE-99: Improper Control of Resource Identifiers ('Resource Injection') •
CVSS: -EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52618 – block/rnbd-srv: Check for unlikely string overflow
https://notcve.org/view.php?id=CVE-2023-52618
In the Linux kernel, the following vulnerability has been resolved: block/rnbd-srv: Check for unlikely string overflow Since "dev_search_path" can technically be as large as PATH_MAX, there was a risk of truncation when copying it and a second string into "full_path" since it was also PATH_MAX sized. The W=1 builds were reporting this warning: drivers/block/rnbd/rnbd-srv.c: In function 'process_msg_open.isra': drivers/block/rnbd/rnbd-srv.c:616:51: warning: '%s' directive output may be truncated writing up to 254 bytes into a region of size between 0 and 4095 [-Wformat-truncation=] 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~ In function 'rnbd_srv_get_full_path', inlined from 'process_msg_open.isra' at drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block/rnbd/rnbd-srv.c:616:17: note: 'snprintf' output between 2 and 4351 bytes into a destination of size 4096 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 617 | dev_search_path, dev_name); | ~~~~~~~~~~~~~~~~~~~~~~~~~~ To fix this, unconditionally check for truncation (as was already done for the case where "%SESSNAME%" was present). En el kernel de Linux, se resolvió la siguiente vulnerabilidad: block/rnbd-srv: Comprueba si hay un desbordamiento de cadena improbable. Dado que "dev_search_path" técnicamente puede ser tan grande como PATH_MAX, existía el riesgo de truncamiento al copiarlo y una segunda cadena en " full_path" ya que también tenía un tamaño PATH_MAX. Las compilaciones W=1 informaban esta advertencia: drivers/block/rnbd/rnbd-srv.c: En función 'process_msg_open.isra': drivers/block/rnbd/rnbd-srv.c:616:51: advertencia: '% La salida de la directiva s se puede truncar escribiendo hasta 254 bytes en una región de tamaño entre 0 y 4095 [-Wformat-truncation=] 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~ En la función 'rnbd_srv_get_full_path', insertada desde 'process_msg_open.isra' en drivers/block/rnbd/rnbd-srv.c:721:14: drivers/block /rnbd/rnbd-srv.c:616:17: nota: 'snprintf' genera entre 2 y 4351 bytes en un destino de tamaño 4096 616 | snprintf(full_path, PATH_MAX, "%s/%s", | ^~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 617 | dev_search_path, dev_name); | ~~~~~~~ ~~~~~~~~~~~~~~~~~~~ Para solucionar este problema, verifique incondicionalmente el truncamiento (como ya se hizo en el caso en el que "%SESSNAME%" estaba presente). • https://git.kernel.org/stable/c/95bc866c11974d3e4a9d922275ea8127ff809cf7 https://git.kernel.org/stable/c/f6abd5e17da33eba15df2bddc93413e76c2b55f7 https://git.kernel.org/stable/c/af7bbdac89739e2e7380387fda598848d3b7010f https://git.kernel.org/stable/c/5b9ea86e662035a886ccb5c76d56793cba618827 https://git.kernel.org/stable/c/a2c6206f18104fba7f887bf4dbbfe4c41adc4339 https://git.kernel.org/stable/c/9e4bf6a08d1e127bcc4bd72557f2dfafc6bc7f41 https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html •
CVSS: -EPSS: 0%CPEs: 7EXPL: 0CVE-2023-52617 – PCI: switchtec: Fix stdev_release() crash after surprise hot remove
https://notcve.org/view.php?id=CVE-2023-52617
In the Linux kernel, the following vulnerability has been resolved: PCI: switchtec: Fix stdev_release() crash after surprise hot remove A PCI device hot removal may occur while stdev->cdev is held open. The call to stdev_release() then happens during close or exit, at a point way past switchtec_pci_remove(). Otherwise the last ref would vanish with the trailing put_device(), just before return. At that later point in time, the devm cleanup has already removed the stdev->mmio_mrpc mapping. Also, the stdev->pdev reference was not a counted one. Therefore, in DMA mode, the iowrite32() in stdev_release() will cause a fatal page fault, and the subsequent dma_free_coherent(), if reached, would pass a stale &stdev->pdev->dev pointer. Fix by moving MRPC DMA shutdown into switchtec_pci_remove(), after stdev_kill(). • https://git.kernel.org/stable/c/d8c293549946ee5078ed0ab77793cec365559355 https://git.kernel.org/stable/c/4a5d0528cf19dbf060313dffbe047bc11c90c24c https://git.kernel.org/stable/c/ff1c7e2fb9e9c3f53715fbe04d3ac47b80be7eb8 https://git.kernel.org/stable/c/1d83c85922647758c1f1e4806a4c5c3cf591a20a https://git.kernel.org/stable/c/0233b836312e39a3c763fb53512b3fa455b473b3 https://git.kernel.org/stable/c/e129c7fa7070fbce57feb0bfc5eaa65eef44b693 https://git.kernel.org/stable/c/df25461119d987b8c81d232cfe4411e91dcabe66 https://lists.debian.org/debian-lts-announce/2024/06/ •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2024-26636 – llc: make llc_ui_sendmsg() more robust against bonding changes
https://notcve.org/view.php?id=CVE-2024-26636
In the Linux kernel, the following vulnerability has been resolved: llc: make llc_ui_sendmsg() more robust against bonding changes syzbot was able to trick llc_ui_sendmsg(), allocating an skb with no headroom, but subsequently trying to push 14 bytes of Ethernet header [1] Like some others, llc_ui_sendmsg() releases the socket lock before calling sock_alloc_send_skb(). Then it acquires it again, but does not redo all the sanity checks that were performed. This fix: - Uses LL_RESERVED_SPACE() to reserve space. - Check all conditions again after socket lock is held again. - Do not account Ethernet header for mtu limitation. [1] skbuff: skb_under_panic: text:ffff800088baa334 len:1514 put:14 head:ffff0000c9c37000 data:ffff0000c9c36ff2 tail:0x5dc end:0x6c0 dev:bond0 kernel BUG at net/core/skbuff.c:193 ! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 6875 Comm: syz-executor.0 Not tainted 6.7.0-rc8-syzkaller-00101-g0802e17d9aca-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skb_panic net/core/skbuff.c:189 [inline] pc : skb_under_panic+0x13c/0x140 net/core/skbuff.c:203 lr : skb_panic net/core/skbuff.c:189 [inline] lr : skb_under_panic+0x13c/0x140 net/core/skbuff.c:203 sp : ffff800096f97000 x29: ffff800096f97010 x28: ffff80008cc8d668 x27: dfff800000000000 x26: ffff0000cb970c90 x25: 00000000000005dc x24: ffff0000c9c36ff2 x23: ffff0000c9c37000 x22: 00000000000005ea x21: 00000000000006c0 x20: 000000000000000e x19: ffff800088baa334 x18: 1fffe000368261ce x17: ffff80008e4ed000 x16: ffff80008a8310f8 x15: 0000000000000001 x14: 1ffff00012df2d58 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000ff0100 x9 : e28a51f1087e8400 x8 : e28a51f1087e8400 x7 : ffff80008028f8d0 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800082b78714 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000089 Call trace: skb_panic net/core/skbuff.c:189 [inline] skb_under_panic+0x13c/0x140 net/core/skbuff.c:203 skb_push+0xf0/0x108 net/core/skbuff.c:2451 eth_header+0x44/0x1f8 net/ethernet/eth.c:83 dev_hard_header include/linux/netdevice.h:3188 [inline] llc_mac_hdr_init+0x110/0x17c net/llc/llc_output.c:33 llc_sap_action_send_xid_c+0x170/0x344 net/llc/llc_s_ac.c:85 llc_exec_sap_trans_actions net/llc/llc_sap.c:153 [inline] llc_sap_next_state net/llc/llc_sap.c:182 [inline] llc_sap_state_process+0x1ec/0x774 net/llc/llc_sap.c:209 llc_build_and_send_xid_pkt+0x12c/0x1c0 net/llc/llc_sap.c:270 llc_ui_sendmsg+0x7bc/0xb1c net/llc/af_llc.c:997 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] sock_sendmsg+0x194/0x274 net/socket.c:767 splice_to_socket+0x7cc/0xd58 fs/splice.c:881 do_splice_from fs/splice.c:933 [inline] direct_splice_actor+0xe4/0x1c0 fs/splice.c:1142 splice_direct_to_actor+0x2a0/0x7e4 fs/splice.c:1088 do_splice_direct+0x20c/0x348 fs/splice.c:1194 do_sendfile+0x4bc/0xc70 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64 fs/read_write.c:1308 [inline] __arm64_sys_sendfile64+0x160/0x3b4 fs/read_write.c:1308 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Code: aa1803e6 aa1903e7 a90023f5 94792f6a (d4210000) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: llc: hacer que llc_ui_sendmsg() sea más robusto contra cambios de vinculación syzbot pudo engañar a llc_ui_sendmsg(), asignando un skb sin espacio libre, pero posteriormente intentó enviar 14 bytes de encabezado Ethernet [ 1] Como otros, llc_ui_sendmsg() libera el bloqueo del socket antes de llamar a sock_alloc_send_skb(). Luego lo adquiere nuevamente, pero no rehace todas las comprobaciones de cordura que se realizaron. Esta solución: - Utiliza LL_RESERVED_SPACE() para reservar espacio. - Verifique todas las condiciones nuevamente después de mantener nuevamente el bloqueo del casquillo. - No tenga en cuenta el encabezado Ethernet para la limitación de mtu. [1] skbuff: skb_under_panic: text:ffff800088baa334 len:1514 put:14 head:ffff0000c9c37000 data:ffff0000c9c36ff2 tail:0x5dc end:0x6c0 dev:bond0 ERROR del kernel en net/core/skbuff.c:193. Error interno: Ups - ERROR: 00000000f2000800 [#1] PREEMPT Módulos SMP vinculados en: CPU: 0 PID: 6875 Comm: syz-executor.0 No contaminado 6.7.0-rc8-syzkaller-00101-g0802e17d9aca-dirty #0 Nombre del hardware : Google Google Compute Engine/Google Compute Engine, BIOS Google 17/11/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc: skb_panic net/core/skbuff.c:189 [en línea] pc: skb_under_panic+0x13c/0x140 net/core/skbuff.c:203 lr: skb_panic net/core/skbuff.c:189 [en línea] lr: skb_under_panic+0x13c/0x140 net/core/skbuff.c:203 sp: ffff800096f97000 x29: ffff800096f97010 x28: ffff80008cc8d668 x27: dfff800000000000 x26: ffff0000cb970c90 x25: 00000000000005dc x24: ffff0000c 9c36ff2 x23: ffff0000c9c37000 x22: 00000000000005ea x21: 00000000000006c0 x20: 000000000000000e x19: ffff800088baa334 x18: 1fffe000368261ce x1 7: ffff80008e4ed000 x16: ffff80008a8310f8 x15: 0000000000000001 x14: 1ffff00012df2d58 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000ff0100 x9: e28a51f1087e8400 x8: e28a 51f1087e8400 x7: ffff80008028f8d0 x6: 0000000000000000 x5: 0000000000000001 x4: 0000000000000001 x3: ffff800082b78714 x2: 00000000000000 001 x1: 0000000100000000 x0: 0000000000000089 Rastreo de llamadas: skb_panic net/core /skbuff.c:189 [en línea] skb_under_panic+0x13c/0x140 net/core/skbuff.c:203 skb_push+0xf0/0x108 net/core/skbuff.c:2451 eth_header+0x44/0x1f8 net/ethernet/eth.c: 83 dev_hard_header include/linux/netdevice.h:3188 [en línea] llc_mac_hdr_init+0x110/0x17c net/llc/llc_output.c:33 llc_sap_action_send_xid_c+0x170/0x344 net/llc/llc_s_ac.c:85 llc_exec_sap_trans_ acciones net/llc/llc_sap.c :153 [en línea] llc_sap_next_state net/llc/llc_sap.c:182 [en línea] llc_sap_state_process+0x1ec/0x774 net/llc/llc_sap.c:209 llc_build_and_send_xid_pkt+0x12c/0x1c0 net/llc/llc_sap.c:270 llc_ ui_sendmsg+0x7bc/ 0xb1c net/llc/af_llc.c:997 sock_sendmsg_nosec net/socket.c:730 [en línea] __sock_sendmsg net/socket.c:745 [en línea] sock_sendmsg+0x194/0x274 net/socket.c:767 splice_to_socket+0x7cc/0xd58 fs /splice.c:881 do_splice_from fs/splice.c:933 [en línea] direct_splice_actor+0xe4/0x1c0 fs/splice.c:1142 splice_direct_to_actor+0x2a0/0x7e4 fs/splice.c:1088 do_splice_direct+0x20c/0x348 fs/splice. c:1194 do_sendfile+0x4bc/0xc70 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [en línea] __se_sys_sendfile64 fs/read_write.c:1308 [en línea] __arm64_sys_sendfile64+0x160/0x3b4 fs /read_write.c:1308 __invoke_syscall arch/arm64/kernel/syscall.c:37 [en línea] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/ 0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+ 0x190/0x194 arch/arm64/kernel/entry.S:595 Código: aa1803e6 aa1903e7 a90023f5 94792f6a (d4210000) • https://git.kernel.org/stable/c/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 https://git.kernel.org/stable/c/84e9d10419f6f4f3f3cd8f9aaf44a48719aa4b1b https://git.kernel.org/stable/c/b643d0defcbacd7fe548bc65c3e4e6f17dc5eb2d https://git.kernel.org/stable/c/04f2a74b562f3a7498be0399309669f342793d8c https://git.kernel.org/stable/c/c22044270da68881074fda81a7d34812726cb249 https://git.kernel.org/stable/c/6d53b813ff8b177f86f149c2f744442681f720e4 https://git.kernel.org/stable/c/cafd3ad3fe03ef4d6632747be9ee15dc0029db4b https://git.kernel.org/stable/c/c451c008f563d56d5e676c9dcafae565f •
CVSS: -EPSS: 0%CPEs: 8EXPL: 0CVE-2023-52609 – binder: fix race between mmput() and do_exit()
https://notcve.org/view.php?id=CVE-2023-52609
In the Linux kernel, the following vulnerability has been resolved: binder: fix race between mmput() and do_exit() Task A calls binder_update_page_range() to allocate and insert pages on a remote address space from Task B. For this, Task A pins the remote mm via mmget_not_zero() first. This can race with Task B do_exit() and the final mmput() refcount decrement will come from Task A. Task A | Task B ------------------+------------------ mmget_not_zero() | | do_exit() | exit_mm() | mmput() mmput() | exit_mmap() | remove_vma() | fput() | In this case, the work of ____fput() from Task B is queued up in Task A as TWA_RESUME. So in theory, Task A returns to userspace and the cleanup work gets executed. However, Task A instead sleep, waiting for a reply from Task B that never comes (it's dead). This means the binder_deferred_release() is blocked until an unrelated binder event forces Task A to go back to userspace. • https://git.kernel.org/stable/c/457b9a6f09f011ebcb9b52cc203a6331a6fc2de7 https://git.kernel.org/stable/c/95b1d336b0642198b56836b89908d07b9a0c9608 https://git.kernel.org/stable/c/252a2a5569eb9f8d16428872cc24dea1ac0bb097 https://git.kernel.org/stable/c/7e7a0d86542b0ea903006d3f42f33c4f7ead6918 https://git.kernel.org/stable/c/98fee5bee97ad47b527a997d5786410430d1f0e9 https://git.kernel.org/stable/c/6696f76c32ff67fec26823fc2df46498e70d9bf3 https://git.kernel.org/stable/c/67f16bf2cc1698fd50e01ee8a2becc5a8e6d3a3e https://git.kernel.org/stable/c/77d210e8db4d61d43b2d16df66b1ec46f •