PT-2026-25886 · Linux · Linux Kernel

Jeffrey Bencteux · Publicado 2026-01-01 · Atualizado 2026-05-26 · CVE-2026-23241

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Média

Vetor base

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The Linux kernel has an issue where the 'at' variant of the getxattr() and listxattr() system calls are not included in the audit read class. This allows bypassing audit rules when calling getxattrat() or listxattrat() on a file to read its extended attributes. Specifically, rules defined with the -w option, such as -w /tmp/test -p rwa -k test rwa, may be circumvented. The current patch addresses this by adding the missing system calls to the audit read class.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Identificadores relacionados

CVE-2026-23241

Produtos afetados

Linux Kernel

Referências · 25

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23241.json · Exploit
• https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git · Nota
• https://cve.org/CVERecord?id=CVE-2026-23241 · Nota de Segurança
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-23241 · Aviso do Fabricante
• https://git.kernel.org/stable/c/5632d14b2f2a0ade2d0068e12676ebed67e3bb2a · Nota
• https://osv.dev/vulnerability/ROOT-OS-UBUNTU-2404-CVE-2026-23241 · Aviso do Fabricante
• https://git.kernel.org/stable/c/a2e8c144299c31d3972295ed80d4cb908daf4f6f · Correção
• https://bencteux.fr/posts/missing_syscalls_audit · Nota
• https://git.kernel.org/stable/c/bcb90a2834c7393c26df9609b889a3097b7700cd · Correção
• https://git.kernel.org/linus/bcb90a2834c7393c26df9609b889a3097b7700cd · Nota
• https://git.kernel.org/stable/c/ad37505ce869a8100ff23f24eea117de7a7516bf · Correção
• https://t.me/msrcreports/3433 · Publicação no Telegram
• https://ubuntu.com/security/CVE-2026-23241 · Aviso do Fabricante
• https://git.kernel.org/stable/c/ed8efd623a5738e03de09dd74b505d0fb77b09f3 · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-23241 · Nota de Segurança