smb/client: fix possible infinite loop and oob read in symlink_data()
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.1epss 0.4%
exploitation probability
0.4%top 68% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
smb/client: fix possible infinite loop and oob read in symlink_data()
On 32-bit architectures, the infinite loop is as follows:
len = p->ErrorDataLength == 0xfffffff8
u8 *next = p->ErrorContextData + len
next == p
On 32-bit architectures, the out-of-bounds read is as follows:
len = p->ErrorDataLength == 0xfffffff0
u8 *next = p->ErrorContextData + len
next == (u8 *)p - 8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/1b9331b16b0ed9414dcf7583d8134bdfeb117aaehttps://git.kernel.org/stable/c/1cfa2d59f669db28d6292d10ff87ca6837c781b0https://git.kernel.org/stable/c/7d9a7f1f96cd617ee9e75bb22217c709038e26b8https://git.kernel.org/stable/c/97a05b0ae9ea5ec052be2eef0f9cc7ce03501bbbhttps://git.kernel.org/stable/c/b41598bf54b3fe528994e573df6008f8f4d0a4f4https://git.kernel.org/stable/c/cd4b9b662f0fb9aa97ee6bf9034eca76fc6cab23