CVE-2024-39480: Linux, грешка в паметта

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: kdb: Fix buffer overflow during tab-complete Currently, when the user attempts symbol completion with the Tab key, kdb will use strncpy() to insert the completed symbol into the command buffer. Unfortunately it passes the size of the source buffer rather than the destination to strncpy() with predictably horrible results. Most obviously if the command buffer is already full but cp, the cursor position, is in the middle of the buffer, then we will write past the end of the supplied buffer. Fix this by replacing the dubious strncpy() calls with memmove()/memcpy() calls plus explicit boundary checks to make sure we have enough space before we start moving characters around.

Засегнати продукти

• Linux Linux: 5d5314d6795f3c1c0f415348ff8c51f7de042b77 преди fb824a99e148ff272a53d71d84122728b5f00992; 5d5314d6795f3c1c0f415348ff8c51f7de042b77 преди ddd2972d8e2dee3b33e8121669d55def59f0be8a; 5d5314d6795f3c1c0f415348ff8c51f7de042b77 преди cfdc2fa4db57503bc6d3817240547c8ddc55fa96; 5d5314d6795f3c1c0f415348ff8c51f7de042b77 преди f636a40834d22e5e3fc748f060211879c056cd33; 5d5314d6795f3c1c0f415348ff8c51f7de042b77 преди 33d9c814652b971461d1e30bead6792851c209e7; 5d5314d6795f3c1c0f415348ff8c51f7de042b77 преди 107e825cc448b7834b31e8b1b3cf0f57426d46d5; 5d5314d6795f3c1c0f415348ff8c51f7de042b77 преди f694da720dcf795dc3eb97bf76d220213f76aaa7; 5d5314d6795f3c1c0f415348ff8c51f7de042b77 преди e9730744bf3af04cda23799029342aa3cddbc454
• Linux Linux: 2.6.35; преди 2.6.35; 4.19.316 до 4.19.*; 5.4.278 до 5.4.*; 5.10.219 до 5.10.*; 5.15.161 до 5.15.*; 6.1.94 до 6.1.*; 6.6.34 до 6.6.*; 6.9.5 до 6.9.*; от 6.10 нататък
• linux linux_kernel: 1da177e4c3f4 преди fb824a99e148; 1da177e4c3f4 преди ddd2972d8e2d; 1da177e4c3f4 преди cfdc2fa4db57; 1da177e4c3f4 преди f636a40834d2; 1da177e4c3f4 преди 33d9c814652b; 1da177e4c3f4 преди 107e825cc448; 1da177e4c3f4 преди f694da720dcf; 1da177e4c3f4 преди e9730744bf3a; 4.19.316 до 4.20; 5.4.278 до 5.5; 5.10.219 до 5.11; 5.15.161 до 5.16; 6.1.94 до 6.2; 6.6.34 до 6.7; 6.9.5 до 6.10; от 6.10 нататък

Вид слабост

• CWE-121 Препълване на буфера в стека

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2024-39480
• https://nvd.nist.gov/vuln/detail/CVE-2024-39480
• https://git.kernel.org/stable/c/fb824a99e148ff272a53d71d84122728b5f00992
• https://git.kernel.org/stable/c/ddd2972d8e2dee3b33e8121669d55def59f0be8a
• https://git.kernel.org/stable/c/cfdc2fa4db57503bc6d3817240547c8ddc55fa96
• https://git.kernel.org/stable/c/f636a40834d22e5e3fc748f060211879c056cd33
• https://git.kernel.org/stable/c/33d9c814652b971461d1e30bead6792851c209e7
• https://git.kernel.org/stable/c/107e825cc448b7834b31e8b1b3cf0f57426d46d5
• https://git.kernel.org/stable/c/f694da720dcf795dc3eb97bf76d220213f76aaa7
• https://git.kernel.org/stable/c/e9730744bf3af04cda23799029342aa3cddbc454