Executive Summary

Informations
Name CVE-2024-26848 First vendor Publication 2024-04-17
Vendor Cve Last vendor Modification 2024-04-17

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score N/A Attack Range N/A
Cvss Impact Score N/A Attack Complexity N/A
Cvss Expoit Score N/A Authentication N/A
Calculate full CVSS 2.0 Vectors scores

Detail

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

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26848

Sources (Detail)

https://git.kernel.org/stable/c/058ed71e0f7aa3b6694ca357e23d084e5d3f2470
https://git.kernel.org/stable/c/106e14ca55a0acb3236ee98813a1d243f8aa2d05
https://git.kernel.org/stable/c/2afdd0cb02329464d77f3ec59468395c791a51a4
https://git.kernel.org/stable/c/5c78be006ed9cb735ac2abf4fd64f3f4ea26da31
https://git.kernel.org/stable/c/5f7a07646655fb4108da527565dcdc80124b14c4
https://git.kernel.org/stable/c/76426abf9b980b46983f97de8e5b25047b4c9863
https://git.kernel.org/stable/c/80b15346492bdba677bbb0adefc611910e505f7b
https://git.kernel.org/stable/c/854ebf45a4ddd4cadeffb6644e88d19020634e1a
https://git.kernel.org/stable/c/96370ba395c572ef496fd2c7afc4a1ab3dedd3f0
https://git.kernel.org/stable/c/9c41f4935625218a2053a2dce1423c3054169809
https://git.kernel.org/stable/c/a6ffae61ad9ebf2fdcb943135b2f30c85f49cd27
https://git.kernel.org/stable/c/b94f434fe977689da4291dc21717790b9bd1c064
https://git.kernel.org/stable/c/f67898867b6b0f4542cddc7fe57997978b948a7a
https://git.kernel.org/stable/c/fe02316e4933befc621fa125efb8f8b4d04cceec
Source Url

Alert History

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0
Date Informations
2024-04-17 17:28:37
  • First insertion