CVE-2024-26848
"AFS Directory Parsing Endless Loop Vulnerability in Linux"
Description
In the Linux kernel, the following vulnerability has been resolved: afs: Fix endless loop in directory parsing If a directory has a block with only ".__afsXXXX" files in it (from uncompleted silly-rename), these .__afsXXXX files are skipped but without advancing the file position in the dir_context. This leads to afs_dir_iterate() repeating the block again and again. Fix this by making the code that skips the .__afsXXXX file also manually advance the file position. The symptoms are a soft lookup: watchdog: BUG: soft lockup - CPU#3 stuck for 52s! [check:5737] ... RIP: 0010:afs_dir_iterate_block+0x39/0x1fd ... ? watchdog_timer_fn+0x1a6/0x213 ... ? asm_sysvec_apic_timer_interrupt+0x16/0x20 ? afs_dir_iterate_block+0x39/0x1fd afs_dir_iterate+0x10a/0x148 afs_readdir+0x30/0x4a iterate_dir+0x93/0xd3 __do_sys_getdents64+0x6b/0xd4 This is almost certainly the actual fix for: https://bugzilla.kernel.org/show_bug.cgi?id=218496
INFO
Published Date :
April 17, 2024, 11:15 a.m.
Last Modified :
June 25, 2024, 10:15 p.m.
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Remotely Exploitable :
No
Impact Score :
Exploitability Score :
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-26848.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-26848 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-26848 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Jun. 25, 2024
Action Type Old Value New Value Added Reference kernel.org https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html [No types assigned] -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 29, 2024
Action Type Old Value New Value -
CVE Modified by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
May. 14, 2024
Action Type Old Value New Value -
CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Apr. 17, 2024
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: afs: Fix endless loop in directory parsing If a directory has a block with only ".__afsXXXX" files in it (from uncompleted silly-rename), these .__afsXXXX files are skipped but without advancing the file position in the dir_context. This leads to afs_dir_iterate() repeating the block again and again. Fix this by making the code that skips the .__afsXXXX file also manually advance the file position. The symptoms are a soft lookup: watchdog: BUG: soft lockup - CPU#3 stuck for 52s! [check:5737] ... RIP: 0010:afs_dir_iterate_block+0x39/0x1fd ... ? watchdog_timer_fn+0x1a6/0x213 ... ? asm_sysvec_apic_timer_interrupt+0x16/0x20 ? afs_dir_iterate_block+0x39/0x1fd afs_dir_iterate+0x10a/0x148 afs_readdir+0x30/0x4a iterate_dir+0x93/0xd3 __do_sys_getdents64+0x6b/0xd4 This is almost certainly the actual fix for: https://bugzilla.kernel.org/show_bug.cgi?id=218496 Added Reference kernel.org https://git.kernel.org/stable/c/5c78be006ed9cb735ac2abf4fd64f3f4ea26da31 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/854ebf45a4ddd4cadeffb6644e88d19020634e1a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/96370ba395c572ef496fd2c7afc4a1ab3dedd3f0 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/b94f434fe977689da4291dc21717790b9bd1c064 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/80b15346492bdba677bbb0adefc611910e505f7b [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/a6ffae61ad9ebf2fdcb943135b2f30c85f49cd27 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/058ed71e0f7aa3b6694ca357e23d084e5d3f2470 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/76426abf9b980b46983f97de8e5b25047b4c9863 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/f67898867b6b0f4542cddc7fe57997978b948a7a [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/106e14ca55a0acb3236ee98813a1d243f8aa2d05 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/fe02316e4933befc621fa125efb8f8b4d04cceec [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/9c41f4935625218a2053a2dce1423c3054169809 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/5f7a07646655fb4108da527565dcdc80124b14c4 [No types assigned] Added Reference kernel.org https://git.kernel.org/stable/c/2afdd0cb02329464d77f3ec59468395c791a51a4 [No types assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-26848 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-26848
weaknesses.