Към съдържанието
Търсене

CVE-2026-68160: Linux, грешка в паметта

9.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.

CVE радар: още уязвимости от този вид

  • Експлоатация: няма данни за експлоатация
  • Атаката може да се автоматизира

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: ceph: fix pre-auth out-of-bounds read on snaptrace in ceph_handle_caps() ceph_handle_caps() reads snap_trace_len from the wire-format ceph_mds_caps header and uses it unconditionally to build a fake end pointer (snaptrace + snaptrace_len) that is later handed to ceph_update_snap_trace() in the CEPH_CAP_OP_IMPORT case: snaptrace = h + 1; snaptrace_len = le32_to_cpu(h->snap_trace_len); p = snaptrace + snaptrace_len; ... case CEPH_CAP_OP_IMPORT: if (snaptrace_len) { ... if (ceph_update_snap_trace(mdsc, snaptrace, snaptrace + snaptrace_len, false, &realm)) { ... } ceph_update_snap_trace() then decodes a struct ceph_mds_snap_realm from snaptrace using ceph_decode_need(&p, e, sizeof(*ri), bad) with the attacker-supplied fake end e == snaptrace + snaptrace_len. With snaptrace_len == 0xFFFFFFFF the bound check is trivially satisfied, ri = p reads sizeof(struct ceph_mds_snap_realm) past the legitimate msg->front buffer, and ri->num_snaps / ri->num_prior_parent_snaps then drive further out-of-bounds reads of the encoded snap arrays. The eleven msg_version >= 2 .. msg_version >= 12 decoder blocks above the op switch each catch this OOB through their ceph_decode_*_safe() / ceph_decode_need() helpers, but they sit behind a hdr.version-gated if, so a malicious or compromised MDS that sets msg->hdr.version = 1 reaches the IMPORT path with no version-gated decoder having validated snap_trace_len. The shape has been present since ceph_handle_caps() was introduced. Validate snap_trace_len against the message front buffer before consuming it, using the canonical ceph_decode_need() / ceph_has_room() helper. The helper bounds the length with subtraction (n <= end - p, guarded by end >= p) rather than pointer addition, so it is wrap-safe for the attacker-controlled u32 l

Засегнати продукти

  • Linux Linux: a8599bd821d084d04a3290fffae1071624ec00ea преди f913192fc782288e060dafc329b2346934be34cc; a8599bd821d084d04a3290fffae1071624ec00ea преди 0c011137194036424e974677e0f1592e22a33d8c; a8599bd821d084d04a3290fffae1071624ec00ea преди cc93f68a31c9b831abf2db8647b5f5b10329d793; a8599bd821d084d04a3290fffae1071624ec00ea преди 9081c71796724ffe96cba253f68fbe42363c5295; a8599bd821d084d04a3290fffae1071624ec00ea преди 03b417afce19ee6b6e61f1bbbbebac924c9f36d1; a8599bd821d084d04a3290fffae1071624ec00ea преди a4228b93706fb74a484e6ffb271c1cc2af3a2ddb; a8599bd821d084d04a3290fffae1071624ec00ea преди 71893c342a26bcff92eaab0b2b75d64aed19308a; a8599bd821d084d04a3290fffae1071624ec00ea преди 4dbc71bcaf9a30abf3920a4e2cc4ed33bba78c02
  • Linux Linux: 2.6.34; преди 2.6.34; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.6 до 7.1.*; от 7.2 нататък

Вид слабост

История

  • 10 август 2026 Публикувано

Други уязвимости в Linux Linux

Първоизточници

CVE-2026-68160: Linux, грешка в паметта | freedomonline.bg