In the Linux kernel, the following vulnerability has been resolved: usb:
typec: tcpm: Correct the PDO counting in pd_set Off-by-one errors happen
because nr_snk_pdo and nr_src_pdo are incorrectly added one. The index of
the loop is equal to the number of PDOs to be updated when leaving the loop
and it doesn’t need to be added one. When doing the power negotiation, TCPM
relies on the “nr_snk_pdo” as the size of the local sink PDO array to match
the Source capabilities of the partner port. If the off-by-one overflow
occurs, a wrong RDO might be sent and unexpected power transfer might
happen such as over voltage or over current (than expected). “nr_src_pdo”
is used to set the Rp level when the port is in Source role. It is also the
array size of the local Source capabilities when filling up the buffer
which will be sent as the Source PDOs (such as in Power Negotiation). If
the off-by-one overflow occurs, a wrong Rp level might be set and wrong
Source PDOs will be sent to the partner port. This could potentially cause
over current or port resets.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 24.04 | noarch | linux | < 6.8.0-38.38 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-aws | < 6.8.0-1011.12 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-azure | < 6.8.0-1010.10 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-gcp | < 6.8.0-1010.11 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-gke | < 6.8.0-1006.9 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-ibm | < 6.8.0-1008.8 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-intel | < 6.8.0-1007.14 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-lowlatency | < 6.8.0-38.38.1 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-nvidia | < 6.8.0-1009.9 | UNKNOWN |
ubuntu | 24.04 | noarch | linux-oem-6.8 | < 6.8.0-1008.8 | UNKNOWN |
git.kernel.org/linus/c4128304c2169b4664ed6fb6200f228cead2ab70 (6.9-rc5)
git.kernel.org/stable/c/c4128304c2169b4664ed6fb6200f228cead2ab70
git.kernel.org/stable/c/f3da3192cdd3fefe213390e976eec424a8e270b5
launchpad.net/bugs/cve/CVE-2024-26995
nvd.nist.gov/vuln/detail/CVE-2024-26995
security-tracker.debian.org/tracker/CVE-2024-26995
ubuntu.com/security/notices/USN-6893-1
ubuntu.com/security/notices/USN-6893-2
ubuntu.com/security/notices/USN-6893-3
ubuntu.com/security/notices/USN-6918-1
www.cve.org/CVERecord?id=CVE-2024-26995