CVE-2026-43494

Katalog CVE

CVSS 7.8 · High EPSS 0,19%

Kerentanan Multiple Releases of Same Resource or Handle pada linux kernel. Skor CVSS 3.1 7.8 (High) menurut CNA.

Deskripsi (NVD)

In the Linux kernel, the following vulnerability has been resolved: net/rds: reset op_nents when zerocopy page pin fails When iov_iter_get_pages2() fails in rds_message_zcopy_from_user(), the pinned pages are released with put_page(), and rm->data.op_mmp_znotifier is cleared. But we fail to properly clear rm->data.op_nents. Later when rds_message_purge() is called from rds_sendmsg() the cleanup loop iterates over the incorrectly non zero number of op_nents and frees them again. Fix this by properly resetting op_nents when it should be in rds_message_zcopy_from_user().

Rincian

Terbit di NVD

21 Mei 2026

Terakhir diubah

23 Juli 2026

Status NVD

Modified

CVSS 3.1

7.8 (High), sumber CNA
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-1341: Multiple Releases of Same Resource or Handle

EPSS (30 hari)

0,19% peluang dieksploitasi; lebih tinggi dari 8,4% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://git.kernel.org/stable/c/03014551938a0887fa55f18ce49b70158a9c0113 patch
• https://git.kernel.org/stable/c/0bbbff00a15b1df2cac9014d6cf4b6890f473353 patch
• https://git.kernel.org/stable/c/290e833d1acb1093bc121fcdc97f5e6161157479 patch
• https://git.kernel.org/stable/c/640e37f58f991546a87540d067279c2c1fa9fe51 patch
• https://git.kernel.org/stable/c/9115669faedccdda100428e2d26fd0aac8c50799 patch
• https://git.kernel.org/stable/c/c6e51512a784c4a7b86e1a044988696e3b3721fa patch
• https://git.kernel.org/stable/c/d84ce1786ce40fdd3dd98db47aec5527817e1ef6 patch
• https://git.kernel.org/stable/c/e174929793195e0cd6a4adb0cad731b39f9019b4 patch
• https://github.com/v12-security/pocs/tree/main/pintheft exploit · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2026/05/21/2 mailing list
• https://access.redhat.com/security/cve/CVE-2026-43494
• https://bugzilla.redhat.com/show_bug.cgi?id=2480434
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43494.json