CVSS: 5.5EPSS: 0%CPEs: 5EXPL: 0CVE-2024-35800 – efi: fix panic in kdump kernel
https://notcve.org/view.php?id=CVE-2024-35800
In the Linux kernel, the following vulnerability has been resolved: efi: fix panic in kdump kernel Check if get_next_variable() is actually valid pointer before calling it. In kdump kernel this method is set to NULL that causes panic during the kexec-ed kernel boot. Tested with QEMU and OVMF firmware. En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: efi: arreglado el pánico en el kernel kdump. Compruebe si get_next_variable() es realmente un puntero válido antes de llamarlo. En el kernel kdump, este método está configurado en NULL, lo que provoca pánico durante el arranque del kernel kexec-ed. • https://git.kernel.org/stable/c/a8901f331b8b7f95a7315d033a22bc84c8365f35 https://git.kernel.org/stable/c/bad267f9e18f8e9e628abd1811d2899b1735a4e1 https://git.kernel.org/stable/c/b9d103aca85f082a343b222493f3cab1219aaaf4 https://git.kernel.org/stable/c/9114ba9987506bcfbb454f6e68558d68cb1abbde https://git.kernel.org/stable/c/7784135f134c13af17d9ffb39a57db8500bc60ff https://git.kernel.org/stable/c/090d2b4515ade379cd592fbc8931344945978210 https://git.kernel.org/stable/c/62b71cd73d41ddac6b1760402bbe8c4932e23531 https://access.redhat.com/security/cve/CVE-2024-35800 •
CVSS: 6.2EPSS: 0%CPEs: 4EXPL: 0CVE-2024-35799 – drm/amd/display: Prevent crash when disable stream
https://notcve.org/view.php?id=CVE-2024-35799
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Prevent crash when disable stream [Why] Disabling stream encoder invokes a function that no longer exists. [How] Check if the function declaration is NULL in disable stream encoder. En el kernel de Linux, se resolvió la siguiente vulnerabilidad: drm/amd/display: evita fallos al deshabilitar la transmisión [Por qué] Al deshabilitar el codificador de transmisión se invoca una función que ya no existe. [Cómo] Compruebe si la declaración de función es NULL al desactivar el codificador de flujo. • https://git.kernel.org/stable/c/4356a2c3f296503c8b420ae8adece053960a9f06 https://git.kernel.org/stable/c/59772327d439874095516673b4b30c48bd83ca38 https://git.kernel.org/stable/c/2b17133a0a2e0e111803124dad09e803718d4a48 https://git.kernel.org/stable/c/72d72e8fddbcd6c98e1b02d32cf6f2b04e10bd1c • CWE-400: Uncontrolled Resource Consumption •
CVSS: -EPSS: 0%CPEs: 4EXPL: 0CVE-2024-35798 – btrfs: fix race in read_extent_buffer_pages()
https://notcve.org/view.php?id=CVE-2024-35798
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix race in read_extent_buffer_pages() There are reports from tree-checker that detects corrupted nodes, without any obvious pattern so possibly an overwrite in memory. After some debugging it turns out there's a race when reading an extent buffer the uptodate status can be missed. To prevent concurrent reads for the same extent buffer, read_extent_buffer_pages() performs these checks: /* (1) */ if (test_bit(EXTENT_BUFFER_UPTODATE, &eb->bflags)) return 0; /* (2) */ if (test_and_set_bit(EXTENT_BUFFER_READING, &eb->bflags)) goto done; At this point, it seems safe to start the actual read operation. Once that completes, end_bbio_meta_read() does /* (3) */ set_extent_buffer_uptodate(eb); /* (4) */ clear_bit(EXTENT_BUFFER_READING, &eb->bflags); Normally, this is enough to ensure only one read happens, and all other callers wait for it to finish before returning. Unfortunately, there is a racey interleaving: Thread A | Thread B | Thread C ---------+----------+--------- (1) | | | (1) | (2) | | (3) | | (4) | | | (2) | | | (1) When this happens, thread B kicks of an unnecessary read. Worse, thread C will see UPTODATE set and return immediately, while the read from thread B is still in progress. This race could result in tree-checker errors like this as the extent buffer is concurrently modified: BTRFS critical (device dm-0): corrupted node, root=256 block=8550954455682405139 owner mismatch, have 11858205567642294356 expect [256, 18446744073709551360] Fix it by testing UPTODATE again after setting the READING bit, and if it's been set, skip the unnecessary read. [ minor update of changelog ] En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: corrige la ejecución en read_extent_buffer_pages() Hay informes de tree-checker que detecta nodos corruptos, sin ningún patrón obvio por lo que posiblemente se sobrescriba en la memoria. • https://git.kernel.org/stable/c/d7172f52e9933b6ec9305e7fe6e829e3939dba04 https://git.kernel.org/stable/c/0427c8ef8bbb7f304de42ef51d69c960e165e052 https://git.kernel.org/stable/c/3a25878a3378adce5d846300c9570f15aa7f7a80 https://git.kernel.org/stable/c/2885d54af2c2e1d910e20d5c8045bae40e02fbc1 https://git.kernel.org/stable/c/ef1e68236b9153c27cb7cf29ead0c532870d4215 •
CVSS: 5.5EPSS: 0%CPEs: 4EXPL: 0CVE-2024-35797 – mm: cachestat: fix two shmem bugs
https://notcve.org/view.php?id=CVE-2024-35797
In the Linux kernel, the following vulnerability has been resolved: mm: cachestat: fix two shmem bugs When cachestat on shmem races with swapping and invalidation, there are two possible bugs: 1) A swapin error can have resulted in a poisoned swap entry in the shmem inode's xarray. Calling get_shadow_from_swap_cache() on it will result in an out-of-bounds access to swapper_spaces[]. Validate the entry with non_swap_entry() before going further. 2) When we find a valid swap entry in the shmem's inode, the shadow entry in the swapcache might not exist yet: swap IO is still in progress and we're before __remove_mapping; swapin, invalidation, or swapoff have removed the shadow from swapcache after we saw the shmem swap entry. This will send a NULL to workingset_test_recent(). The latter purely operates on pointer bits, so it won't crash - node 0, memcg ID 0, eviction timestamp 0, etc. are all valid inputs - but it's a bogus test. In theory that could result in a false "recently evicted" count. Such a false positive wouldn't be the end of the world. But for code clarity and (future) robustness, be explicit about this case. Bail on get_shadow_from_swap_cache() returning NULL. • https://git.kernel.org/stable/c/cf264e1329fb0307e044f7675849f9f38b44c11a https://git.kernel.org/stable/c/b79f9e1ff27c994a4c452235ba09e672ec698e23 https://git.kernel.org/stable/c/d962f6c583458037dc7e529659b2b02b9dd3d94b https://git.kernel.org/stable/c/24a0e73d544439bb9329fbbafac44299e548a677 https://git.kernel.org/stable/c/d5d39c707a4cf0bcc84680178677b97aa2cb2627 https://access.redhat.com/security/cve/CVE-2024-35797 https://bugzilla.redhat.com/show_bug.cgi?id=2281151 •
CVSS: 5.5EPSS: 0%CPEs: 8EXPL: 0CVE-2024-35796 – net: ll_temac: platform_get_resource replaced by wrong function
https://notcve.org/view.php?id=CVE-2024-35796
In the Linux kernel, the following vulnerability has been resolved: net: ll_temac: platform_get_resource replaced by wrong function The function platform_get_resource was replaced with devm_platform_ioremap_resource_byname and is called using 0 as name. This eventually ends up in platform_get_resource_byname in the call stack, where it causes a null pointer in strcmp. if (type == resource_type(r) && !strcmp(r->name, name)) It should have been replaced with devm_platform_ioremap_resource. En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: net:ll_temac: platform_get_resource reemplazada por una función incorrecta La función platform_get_resource fue reemplazada por devm_platform_ioremap_resource_byname y se llama usando 0 como nombre. Esto eventualmente termina en platform_get_resource_byname en la pila de llamadas, donde genera un puntero null en strcmp. if (type == Resource_type(r) && !strcmp(r->name, name)) Debería haber sido reemplazado por devm_platform_ioremap_resource. • https://git.kernel.org/stable/c/bd69058f50d5ffa659423bcfa6fe6280ce9c760a https://git.kernel.org/stable/c/77c8cfdf808410be84be56aff7e0e186b8c5a879 https://git.kernel.org/stable/c/6d9395ba7f85bdb7af0b93272e537484ecbeff48 https://git.kernel.org/stable/c/553d294db94b5f139378022df480a9fb6c3ae39e https://git.kernel.org/stable/c/46efbdbc95a30951c2579caf97b6df2ee2b3bef3 https://git.kernel.org/stable/c/476eed5f1c22034774902a980aa48dc4662cb39a https://git.kernel.org/stable/c/7e9edb569fd9f688d887e36db8170f6e22bafbc8 https://git.kernel.org/stable/c/92c0c29f667870f17c0b764544bdf22ce •