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: 5.3EPSS: 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: 4.4EPSS: 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-2021-47117 – ext4: fix bug on in ext4_es_cache_extent as ext4_split_extent_at failed
https://notcve.org/view.php?id=CVE-2021-47117
In the Linux kernel, the following vulnerability has been resolved: ext4: fix bug on in ext4_es_cache_extent as ext4_split_extent_at failed We got follow bug_on when run fsstress with injecting IO fault: [130747.323114] kernel BUG at fs/ext4/extents_status.c:762! [130747.323117] Internal error: Oops - BUG: 0 [#1] SMP ...... [130747.334329] Call trace: [130747.334553] ext4_es_cache_extent+0x150/0x168 [ext4] [130747.334975] ext4_cache_extents+0x64/0xe8 [ext4] [130747.335368] ext4_find_extent+0x300/0x330 [ext4] [130747.335759] ext4_ext_map_blocks+0x74/0x1178 [ext4] [130747.336179] ext4_map_blocks+0x2f4/0x5f0 [ext4] [130747.336567] ext4_mpage_readpages+0x4a8/0x7a8 [ext4] [130747.336995] ext4_readpage+0x54/0x100 [ext4] [130747.337359] generic_file_buffered_read+0x410/0xae8 [130747.337767] generic_file_read_iter+0x114/0x190 [130747.338152] ext4_file_read_iter+0x5c/0x140 [ext4] [130747.338556] __vfs_read+0x11c/0x188 [130747.338851] vfs_read+0x94/0x150 [130747.339110] ksys_read+0x74/0xf0 This patch's modification is according to Jan Kara's suggestion in: https://patchwork.ozlabs.org/project/linux-ext4/patch/20210428085158.3728201-1-yebin10@huawei.com/ "I see. Now I understand your patch. Honestly, seeing how fragile is trying to fix extent tree after split has failed in the middle, I would probably go even further and make sure we fix the tree properly in case of ENOSPC and EDQUOT (those are easily user triggerable). Anything else indicates a HW problem or fs corruption so I'd rather leave the extent tree as is and don't try to fix it (which also means we will not create overlapping extents)." • https://git.kernel.org/stable/c/e33bafad30d34cfa5e9787cb099cab05e2677fcb https://git.kernel.org/stable/c/5b3a9a2be59478b013a430ac57b0f3d65471b071 https://git.kernel.org/stable/c/d8116743ef5432336289256b2f7c117299213eb9 https://git.kernel.org/stable/c/569496aa3776eea1ff0d49d0174ac1b7e861e107 https://git.kernel.org/stable/c/920697b004e49cb026e2e15fe91be065bf0741b7 https://git.kernel.org/stable/c/d3b668b96ad3192c0581a248ae2f596cd054792a https://git.kernel.org/stable/c/48105dc98c9ca35af418746277b087cb2bc6df7c https://git.kernel.org/stable/c/082cd4ec240b8734a82a89ffb890216ac •
CVSS: -EPSS: 0%CPEs: 3EXPL: 0CVE-2021-47116 – ext4: fix memory leak in ext4_mb_init_backend on error path.
https://notcve.org/view.php?id=CVE-2021-47116
In the Linux kernel, the following vulnerability has been resolved: ext4: fix memory leak in ext4_mb_init_backend on error path. Fix a memory leak discovered by syzbot when a file system is corrupted with an illegally large s_log_groups_per_flex. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: ext4: corrige la pérdida de memoria en ext4_mb_init_backend en la ruta de error. Solucione una pérdida de memoria descubierta por syzbot cuando un sistema de archivos está dañado con un s_log_groups_per_flex ilegalmente grande. • https://git.kernel.org/stable/c/2050c6e5b161e5e25ce3c420fef58b24fa388a49 https://git.kernel.org/stable/c/04fb2baa0b147f51db065a1b13a11954abe592d0 https://git.kernel.org/stable/c/a8867f4e3809050571c98de7a2d465aff5e4daf5 •