nilfs2: fix possible int overflows in nilfs_fiemap()
3Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackepss 0.3%
probabilidad de explotación
0.3%top 84% de las CVE
explotación observada
noninguna fuente lo reporta
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix possible int overflows in nilfs_fiemap()
Since nilfs_bmap_lookup_contig() in nilfs_fiemap() calculates its result
by being prepared to go through potentially maxblocks == INT_MAX blocks,
the value in n may experience an overflow caused by left shift of blkbits.
While it is extremely unlikely to occur, play it safe and cast right hand
expression to wider type to mitigate the issue.
Found by Linux Verification Center (linuxtesting.org) with static analysis
tool SVACE.
Productos afectados
Linux · LinuxReferencias
https://git.kernel.org/stable/c/250423300b4b0335918be187ef3cade248c06e6ahttps://git.kernel.org/stable/c/58b1c6881081f5ddfb9a14dc241a74732c0f855chttps://git.kernel.org/stable/c/6438ef381c183444f7f9d1de18f22661cba1e946https://git.kernel.org/stable/c/7649937987fed51ed09985da4019d50189fc534ehttps://git.kernel.org/stable/c/8f41df5fd4c11d26e929a85f7239799641f92da7https://git.kernel.org/stable/c/b9495a9109abc31d3170f7aad7d48aa64610a1a2https://git.kernel.org/stable/c/f2bd0f1ab47822fe5bd699c8458b896c4b2edea1https://git.kernel.org/stable/c/f3d80f34f58445355fa27b9579a449fb186aa64ehttps://lists.debian.org/debian-lts-announce/2025/03/msg00028.htmlhttps://lists.debian.org/debian-lts-announce/2025/05/msg00030.html