CVSS: 5.9EPSS: 0%CPEs: 11EXPL: 0CVE-2023-52881 – tcp: do not accept ACK of bytes we never sent
https://notcve.org/view.php?id=CVE-2023-52881
In the Linux kernel, the following vulnerability has been resolved: tcp: do not accept ACK of bytes we never sent This patch is based on a detailed report and ideas from Yepeng Pan and Christian Rossow. ACK seq validation is currently following RFC 5961 5.2 guidelines: The ACK value is considered acceptable only if it is in the range of ((SND.UNA - MAX.SND.WND) <= SEG.ACK <= SND.NXT). All incoming segments whose ACK value doesn't satisfy the above condition MUST be discarded and an ACK sent back. It needs to be noted that RFC 793 on page 72 (fifth check) says: "If the ACK is a duplicate (SEG.ACK < SND.UNA), it can be ignored. If the ACK acknowledges something not yet sent (SEG.ACK > SND.NXT) then send an ACK, drop the segment, and return". The "ignored" above implies that the processing of the incoming data segment continues, which means the ACK value is treated as acceptable. • https://git.kernel.org/stable/c/354e4aa391ed50a4d827ff6fc11e0667d0859b25 https://git.kernel.org/stable/c/8d15569e14cfcf9151e9e3b4c0cb98369943a2bb https://git.kernel.org/stable/c/e252bbd8c87b95e9cecdc01350fbb0b46a0f9bf1 https://git.kernel.org/stable/c/2ee4432e82437a7c051c254b065fbf5d4581e1a3 https://git.kernel.org/stable/c/69eae75ca5255e876628ac5cee9eaab31f644b57 https://git.kernel.org/stable/c/458f07ffeccd17f99942311e09ef574ddf4a414a https://git.kernel.org/stable/c/7ffff0cc929fdfc62a74b384c4903d6496c910f0 https://git.kernel.org/stable/c/b17a886ed29f3b70b78ccf632dad03e0c •
CVSS: -EPSS: 0%CPEs: 10EXPL: 0CVE-2024-36015 – ppdev: Add an error check in register_device
https://notcve.org/view.php?id=CVE-2024-36015
In the Linux kernel, the following vulnerability has been resolved: ppdev: Add an error check in register_device In register_device, the return value of ida_simple_get is unchecked, in witch ida_simple_get will use an invalid index value. To address this issue, index should be checked after ida_simple_get. When the index value is abnormal, a warning message should be printed, the port should be dropped, and the value should be recorded. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ppdev: agregue una verificación de errores en Register_device. En Register_device, el valor de retorno de ida_simple_get no está marcado, por lo que ida_simple_get usará un valor de índice no válido. Para solucionar este problema, se debe verificar el índice después de ida_simple_get. • https://git.kernel.org/stable/c/9a69645dde1188723d80745c1bc6ee9af2cbe2a7 https://git.kernel.org/stable/c/9c2b46e720d5b083268ca0131f513a90696f3a82 https://git.kernel.org/stable/c/762602796be626cbb6b3a6573e00b9ee7db00c97 https://git.kernel.org/stable/c/65cd017d43f4319a56747d38308b0a24cf57299e https://git.kernel.org/stable/c/b8c6b83cc3adff3ddf403c8c7063fe6d08b2b9d9 https://git.kernel.org/stable/c/d32caf51379a4d71db03d3d4d7c22d27cdf7f68b https://git.kernel.org/stable/c/b65d0410b879af0295d22438a4a32012786d152a https://git.kernel.org/stable/c/df9329247dbbf00f6057e002139ab3fa5 •
CVSS: -EPSS: 0%CPEs: 9EXPL: 0CVE-2024-36014 – drm/arm/malidp: fix a possible null pointer dereference
https://notcve.org/view.php?id=CVE-2024-36014
In the Linux kernel, the following vulnerability has been resolved: drm/arm/malidp: fix a possible null pointer dereference In malidp_mw_connector_reset, new memory is allocated with kzalloc, but no check is performed. In order to prevent null pointer dereferencing, ensure that mw_state is checked before calling __drm_atomic_helper_connector_reset. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/arm/malidp: corrige una posible desreferencia del puntero nulo En malidp_mw_connector_reset, se asigna nueva memoria con kzalloc, pero no se realiza ninguna verificación. Para evitar la desreferenciación del puntero nulo, asegúrese de que mw_state esté marcado antes de llamar a __drm_atomic_helper_connector_reset. • https://git.kernel.org/stable/c/8cbc5caf36ef7a299b5cbedf55f27fd898d700bf https://git.kernel.org/stable/c/b6cc5dd06336ed8bb3a7a1fc5aaf7d5e88bc0818 https://git.kernel.org/stable/c/565d9ad7e5a18eb69ed8b66a9e9bb3f45346520c https://git.kernel.org/stable/c/a5fa5b40a278a3ca978fed64707bd27614adb1eb https://git.kernel.org/stable/c/3e54d4e95120641216dfe91a6c49f116a9f68490 https://git.kernel.org/stable/c/e4b52d49383306ef73fd1bd9102538beebb0fe07 https://git.kernel.org/stable/c/335cc45ef2b81b68be63c698b4f867a530bdf7a5 https://git.kernel.org/stable/c/b77620730f614059db2470e8ebab3e725 •
CVSS: 5.5EPSS: 0%CPEs: 6EXPL: 0CVE-2023-52880 – tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc
https://notcve.org/view.php?id=CVE-2023-52880
In the Linux kernel, the following vulnerability has been resolved: tty: n_gsm: require CAP_NET_ADMIN to attach N_GSM0710 ldisc Any unprivileged user can attach N_GSM0710 ldisc, but it requires CAP_NET_ADMIN to create a GSM network anyway. Require initial namespace CAP_NET_ADMIN to do that. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: tty: n_gsm: requiere CAP_NET_ADMIN para adjuntar el ldisc N_GSM0710. Cualquier usuario sin privilegios puede adjuntar el ldisc N_GSM0710, pero de todos modos requiere CAP_NET_ADMIN para crear una red GSM. Requiere el espacio de nombres inicial CAP_NET_ADMIN para hacer eso. • https://git.kernel.org/stable/c/7d303dee473ba3529d75b63491e9963342107bed https://git.kernel.org/stable/c/7a529c9023a197ab3bf09bb95df32a3813f7ba58 https://git.kernel.org/stable/c/ada28eb4b9561aab93942f3224a2e41d76fe57fa https://git.kernel.org/stable/c/2d154a54c58f9c8375bfbea9f7e51ba3bfb2e43a https://git.kernel.org/stable/c/2b85977977cbd120591b23c2450e90a5806a7167 https://git.kernel.org/stable/c/67c37756898a5a6b2941a13ae7260c89b54e0d88 https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html https://lists.debian.org/debian-lts-announce/2024&# • CWE-99: Improper Control of Resource Identifiers ('Resource Injection') •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2021-47572 – net: nexthop: fix null pointer dereference when IPv6 is not enabled
https://notcve.org/view.php?id=CVE-2021-47572
In the Linux kernel, the following vulnerability has been resolved: net: nexthop: fix null pointer dereference when IPv6 is not enabled When we try to add an IPv6 nexthop and IPv6 is not enabled (!CONFIG_IPV6) we'll hit a NULL pointer dereference[1] in the error path of nh_create_ipv6() due to calling ipv6_stub->fib6_nh_release. The bug has been present since the beginning of IPv6 nexthop gateway support. Commit 1aefd3de7bc6 ("ipv6: Add fib6_nh_init and release to stubs") tells us that only fib6_nh_init has a dummy stub because fib6_nh_release should not be called if fib6_nh_init returns an error, but the commit below added a call to ipv6_stub->fib6_nh_release in its error path. To fix it return the dummy stub's -EAFNOSUPPORT error directly without calling ipv6_stub->fib6_nh_release in nh_create_ipv6()'s error path. [1] Output is a bit truncated, but it clearly shows the error. BUG: kernel NULL pointer dereference, address: 000000000000000000 #PF: supervisor instruction fetch in kernel modede #PF: error_code(0x0010) - not-present pagege PGD 0 P4D 0 Oops: 0010 [#1] PREEMPT SMP NOPTI CPU: 4 PID: 638 Comm: ip Kdump: loaded Not tainted 5.16.0-rc1+ #446 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-4.fc34 04/01/2014 RIP: 0010:0x0 Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. RSP: 0018:ffff888109f5b8f0 EFLAGS: 00010286^Ac RAX: 0000000000000000 RBX: ffff888109f5ba28 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881008a2860 RBP: ffff888109f5b9d8 R08: 0000000000000000 R09: 0000000000000000 R10: ffff888109f5b978 R11: ffff888109f5b948 R12: 00000000ffffff9f R13: ffff8881008a2a80 R14: ffff8881008a2860 R15: ffff8881008a2840 FS: 00007f98de70f100(0000) GS:ffff88822bf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000100efc000 CR4: 00000000000006e0 Call Trace: <TASK> nh_create_ipv6+0xed/0x10c rtm_new_nexthop+0x6d7/0x13f3 ? check_preemption_disabled+0x3d/0xf2 ? • https://git.kernel.org/stable/c/53010f991a9f5e4ed2db705ddde6ff32709192a2 https://git.kernel.org/stable/c/7b6f44856da5ba0b1aa61403eb9fddd272156503 https://git.kernel.org/stable/c/b70ff391deeec35cdd8a05f5f63f5fe28bc4f225 https://git.kernel.org/stable/c/39509d76a9a3d02f379d52cb4b1449469c56c0e0 https://git.kernel.org/stable/c/1c743127cc54b112b155f434756bd4b5fa565a99 • CWE-476: NULL Pointer Dereference •