CVE-2026-89673: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix XDR padding calculation in ff_encode_getdeviceinfo nfsd4_ff_encode_getdeviceinfo() computes the da_addr_body reservation as 16 + netid_len + addr_len, but the subsequent xdr_encode_opaque() calls emit 8 + round_up(netid_len, 4) + round_up(addr_len, 4) bytes. The mismatch means the declared da_addr_body length exceeds the actual encoded data by 2-8 bytes on every flexfile GETDEVICEINFO reply, leaking stale reply-page content to the client and mis-aligning the subsequent version list decode. Use xdr_align_size() for each string length to match what xdr_encode_opaque() actually writes.

Засегнати продукти

• Linux Linux: 3f1a2b0b2d575f39ff0bedb5411822fe7446a805 преди 356decf074b82bac5564568203c12426dcea3470; 19a648a07572c70fbe16faf0fafaf3dce9fd998a преди 15460c8e6c9bc92cda8f68bc419ac082300ab3d6; 6d08bd22fa2941a4d5ef45ed115dd00e484a93d7 преди 9be67a6be48ddf2ebaa98c0df671690b8f9666e7; 6372e2ee629894433fe6107d7048536a3280a284 преди 88bce7e326c368d7df15126ccac537e54bebd467; 6372e2ee629894433fe6107d7048536a3280a284 преди 74015b7be806ad9e21d46f7bd2831df280c6c783; 6372e2ee629894433fe6107d7048536a3280a284 преди 41ebca28e17f84293650598f86bd69532ec1a8e0; 6372e2ee629894433fe6107d7048536a3280a284 преди 62e5949f0dd5ec837af144860ff908369df4c7c9; 6372e2ee629894433fe6107d7048536a3280a284 преди 8b989aaec85e1293a871d602590c951fe44b8647; 82e36f0c287769a0430268739a71dbd56df0e679; 6370e66a71c4869247f8f406c2a8b2c43df8998f; 16282aeca44bfac0d1ac3be6cd1a719d6ff3d749; efcae97fa425ca6db9d126e37daccf2d7225cb09; 64c959d59c24c661bd5338e4e6f1f703d7c309a1; 5.10.195 преди 5.10.270; 5.15.132 преди 5.15.221; 6.1.53 преди 6.1.188; 4.14.326 преди 4.15; 4.19.295 преди 4.20; 5.4.257 преди 5.5; 6.4.16 преди 6.5; 6.5.3 преди 6.6
• Linux Linux: 6.6; преди 6.6; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89673
• https://nvd.nist.gov/vuln/detail/CVE-2026-89673
• https://git.kernel.org/stable/c/356decf074b82bac5564568203c12426dcea3470
• https://git.kernel.org/stable/c/15460c8e6c9bc92cda8f68bc419ac082300ab3d6
• https://git.kernel.org/stable/c/9be67a6be48ddf2ebaa98c0df671690b8f9666e7
• https://git.kernel.org/stable/c/88bce7e326c368d7df15126ccac537e54bebd467
• https://git.kernel.org/stable/c/74015b7be806ad9e21d46f7bd2831df280c6c783
• https://git.kernel.org/stable/c/41ebca28e17f84293650598f86bd69532ec1a8e0
• https://git.kernel.org/stable/c/62e5949f0dd5ec837af144860ff908369df4c7c9
• https://git.kernel.org/stable/c/8b989aaec85e1293a871d602590c951fe44b8647