CVE-2024-35785: tee: optee: Fix kernel panic caused by incorrect error handling
In the Linux kernel, the following vulnerability has been resolved:
tee: optee: Fix kernel panic caused by incorrect error handling
The error path while failing to register devices on the TEE bus has a bug leading to kernel panic as follows:
[ 15.398930] Unable to handle kernel paging request at virtual address ffff07ed00626d7c [ 15.406913] Mem abort info: [ 15.409722] ESR = 0x0000000096000005 [ 15.413490] EC = 0x25: DABT (current EL), IL = 32 bits [ 15.418814] SET = 0, FnV = 0 [ 15.421878] EA = 0, S1PTW = 0 [ 15.425031] FSC = 0x05: level 1 translation fault [ 15.429922] Data abort info: [ 15.432813] ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 [ 15.438310] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 15.443372] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 15.448697] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000d9e3e000 [ 15.455413] [ffff07ed00626d7c] pgd=1800000bffdf9003, p4d=1800000bffdf9003, pud=0000000000000000 [ 15.464146] Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP
Commit 7269cba53d90 ("tee: optee: Fix supplicant based device enumeration") lead to the introduction of this bug. So fix it appropriately.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/linuxto a version that resolves this vulnerability.Fixed in 5.10.223-1Fixed in 5.10.234-1Fixed in 6.1.129-1Fixed in 6.1.135-1Fixed in 6.12.25-1Fixed in 6.12.27-1 - Upgrade
Upgrade
Linux kernel: tee/optee (Fix kernel panic caused by incorrect error handling; Fix supplicant based device enumeration)to a version that resolves this vulnerability.Patch 7269cba53d90
Event History
Frequently Asked Questions
What is the severity of CVE-2024-35785?
The severity of CVE-2024-35785 has not been explicitly rated, but it involves a kernel panic which can lead to system instability.
How do I fix CVE-2024-35785?
To fix CVE-2024-35785, update your Linux kernel to one of the patched versions: 5.10.223-1, 5.10.226-1, 6.1.123-1, 6.1.128-1, 6.12.12-1, or 6.12.13-1.
What systems are affected by CVE-2024-35785?
CVE-2024-35785 affects systems running specific versions of the Debian Linux kernel.
What causes CVE-2024-35785?
CVE-2024-35785 is caused by a bug in the error handling path for failing to register devices on the TEE bus, leading to kernel panic.
Is there a workaround for CVE-2024-35785?
There are no known workarounds for CVE-2024-35785; applying the recommended kernel updates is essential.