Open-Source Security Intelligence

Know every vulnerability
before it knows you.

DevGuard continuously monitors your dependencies and alerts you when CVEs like this one affect your stack — with real-time threat intelligence built for developers.

Checkout DevGuardView on GitHub
Search

CVE-2024-26848

Published Apr 17, 2024·Last modified Dec 19, 2024
Affected Components(0)

No affected components available

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
Risk Scores
Base Score
0.0

Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.

Threat Intelligence
0.0

No exploitation activity has been observed at this time. Continue routine monitoring.

EPSS
N/A

Probability that this vulnerability will be exploited in the wild within the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

Browse More

2024 vulnerabilities
Scan your project

Continuously monitor your dependencies and get alerted when vulnerabilities like this one affect your stack.

Checkout DevGuard