Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 5d5314d6795f3c1c0f415348ff8c51f7de042b77 before fb824a99e148ff272a53d71d84122728b5f00992; affected 5d5314d6795f3c1c0f415348ff8c51f7de042b77 before ddd2972d8e2dee3b33e8121669d55def59f0be8a; affected 5d5314d6795f3c1c0f415348ff8c51f7de042b77 before cfdc2fa4db57503bc6d3817240547c8ddc55fa96; affected 5d5314d6795f3c1c0f415348ff8c51f7de042b77 before f636a40834d22e5e3fc748f060211879c056cd33; affected 5d5314d6795f3c1c0f415348ff8c51f7de042b77 before 33d9c814652b971461d1e30bead6792851c209e7; affected 5d5314d6795f3c1c0f415348ff8c51f7de042b77 before 107e825cc448b7834b31e8b1b3cf0f57426d46d5; affected 5d5314d6795f3c1c0f415348ff8c51f7de042b77 before f694da720dcf795dc3eb97bf76d220213f76aaa7; affected 5d5314d6795f3c1c0f415348ff8c51f7de042b77 before e9730744bf3af04cda23799029342aa3cddbc454 |
| Linux / Linux | affected 2.6.35; unaffected 0 before 2.6.35; unaffected 4.19.316 through 4.19.*; unaffected 5.4.278 through 5.4.*; unaffected 5.10.219 through 5.10.*; unaffected 5.15.161 through 5.15.*; unaffected 6.1.94 through 6.1.*; unaffected 6.6.34 through 6.6.*; unaffected 6.9.5 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- 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
ADP enrichment
No English description supplied.
- 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
No English description supplied.
No references supplied.