SECUFOCUSNOW
Home›CVE index›CVE-2024-50047
Review reviewHigh

CVE-2024-50047

Linux Linux, linux kernel

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF in async decryption Doing an async decryption (large read) crashes with a slab-use-after-free way down in the crypto API. Reproducer: # mount.cifs -o ...,seal,esize=1 //srv/share /mnt # dd if=/mnt/largefile of=/dev/null ... [ 194.196391] ================================================================== [ 194.196844] BUG: KASAN: slab-use-after-free in gf128mul_4k_lle+0xc1/0x110 [ 194.197269] Read of size 8 at addr ffff888112bd0448 by task kworker/u77:2/899 [ 194.197707] [ 194.197818] CPU: 12 UID: 0 PID:...

CVSS
7.8
EPSS
-
- percentile
CISA KEV
Not listed
Published
2024.10.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability-
Technical severityCVSS 7.8

Vulnerability overview

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix UAF in async decryption Doing an async decryption (large read) crashes with a slab-use-after-free way down in the crypto API. Reproducer: # mount.cifs -o ...,seal,esize=1 //srv/share /mnt # dd if=/mnt/largefile of=/dev/null ... [ 194.196391] ================================================================== [ 194.196844] BUG: KASAN: slab-use-after-free in gf128mul_4k_lle+0xc1/0x110 [ 194.197269] Read of size 8 at addr ffff888112bd0448 by task kworker/u77:2/899 [ 194.197707] [ 194.197818] CPU: 12 UID: 0 PID:...

Affected product and versions

Product
Linux Linux, linux kernel
Affected versions
>= 35cf94a397280b9e27576ac1480f631bdd3e7b70 < 8f14a476abba13144df5434871a7225fd29af633, >= 35cf94a397280b9e27576ac1480f631bdd3e7b70 < ef51c0d544b1518b35364480317ab6d3468f205d, >= 35cf94a397280b9e27576ac1480f631bdd3e7b70 < bce966530fd5542bbb422cb45ecb775f7a1a6bc3, >= 35cf94a397280b9e27576ac1480f631bdd3e7b70 < 0809fb86ad13b29e1d6d491364fc7ea4fb545995, >= 35cf94a397280b9e27576ac1480f631bdd3e7b70 < 538c26d9bf70c90edc460d18c81008a4e555925a, >= 35cf94a397280b9e27576ac1480f631bdd3e7b70 < b0abcd65ec545701b8793e12bc27dc98042b151a, >= 5.4, < 6.6.57, >= 6.7 < 6.11.4
Fixed versions
6.6.57, 6.11.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-416