cbcvebase.
CVE-2026-23474
published 2026-04-03

CVE-2026-23474: In the Linux kernel, the following vulnerability has been resolved: mtd: Avoid boot crash in RedBoot partition table parser Given CONFIG_FORTIFY_SOURCE=y and a…

PriorityP423medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.14%
4.0th percentile
In the Linux kernel, the following vulnerability has been resolved: mtd: Avoid boot crash in RedBoot partition table parser Given CONFIG_FORTIFY_SOURCE=y and a recent compiler, commit 439a1bcac648 ("fortify: Use __builtin_dynamic_object_size() when available") produces the warning below and an oops. Searching for RedBoot partition table in 50000000.flash at offset 0x7e0000 ------------[ cut here ]------------ WARNING: lib/string_helpers.c:1035 at 0xc029e04c, CPU#0: swapper/0/1 memcmp: detected buffer overflow: 15 byte read of buffer size 14 Modules linked in: CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.19.0 #1 NONE As Kees said, "'names' is pointing to the final 'namelen' many bytes of the allocation ... 'namelen' could be basically any length at all. This fortify warning looks legit to me -- this code used to be reading beyond the end of the allocation." Since the size of the dynamic allocation is calculated with strlen() we can use strcmp() instead of memcmp() and remain within bounds.

Affected

64 ranges· showing 25
VendorProductVersion rangeFixed in
debianlinux< linux 6.19.10-1 (forky)linux 6.19.10-1 (forky)
linuxlinux
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < ca235d11fc2fd8fce1dcd9d732dc780be0cde2deca235d11fc2fd8fce1dcd9d732dc780be0cde2de
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e0065e106f798ce6862251bc4fc030ac5cead940e0065e106f798ce6862251bc4fc030ac5cead940
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0b08be5aca212a99f8ba786fee4922feac08002c0b08be5aca212a99f8ba786fee4922feac08002c
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d8570211a2b1ec886a462daa0be4e9983ac768bbd8570211a2b1ec886a462daa0be4e9983ac768bb
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2025b2d1f9d5cad6ea6fe85654c6c41297c3130b2025b2d1f9d5cad6ea6fe85654c6c41297c3130b
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < c4054ad2d8bff4e8e937cd4a1d1a04c1e8f77a2cc4054ad2d8bff4e8e937cd4a1d1a04c1e8f77a2c
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 75a4d8cfe7784f909b3bd69325abac8e04ecb38575a4d8cfe7784f909b3bd69325abac8e04ecb385
linuxlinux>= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 8e2f8020270af7777d49c2e7132260983e4fc5668e2f8020270af7777d49c2e7132260983e4fc566
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel
linuxlinux_kernel>= 0 < 6.19.10-16.19.10-1
linuxlinux_kernel>= 2.6.12.1 < 5.10.2535.10.253
linuxlinux_kernel>= 5.11 < 5.15.2035.15.203
linuxlinux_kernel>= 5.16 < 6.1.1676.1.167
linuxlinux_kernel>= 6.13 < 6.18.206.18.20
linuxlinux_kernel>= 6.19 < 6.19.106.19.10

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
vendor_ubuntu7.1HIGH
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