cbcvebase.
CVE-2024-43845
published 2024-08-17

CVE-2024-43845: In the Linux kernel, the following vulnerability has been resolved: udf: Fix bogus checksum computation in udf_rename() Syzbot reports uninitialized memory…

PriorityP412low3.3CVSS 3.1
AVLACLPRLUINSUCNILAN
EPSS
0.22%
12.8th percentile
In the Linux kernel, the following vulnerability has been resolved: udf: Fix bogus checksum computation in udf_rename() Syzbot reports uninitialized memory access in udf_rename() when updating checksum of '..' directory entry of a moved directory. This is indeed true as we pass on-stack diriter.fi to the udf_update_tag() and because that has only struct fileIdentDesc included in it and not the impUse or name fields, the checksumming function is going to checksum random stack contents beyond the end of the structure. This is actually harmless because the following udf_fiiter_write_fi() will recompute the checksum from on-disk buffers where everything is properly included. So all that is needed is just removing the bogus calculation.

Affected

11 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.10.3-1 (forky)linux 6.10.3-1 (forky)
linuxlinux
linuxlinux>= 626860c470ff88e5f7f22a282efd1bfe953a1b54 < 9c439311c13fc6faab1921441165c9b8b500c83b9c439311c13fc6faab1921441165c9b8b500c83b
linuxlinux>= e9109a92d2a95889498bed3719cd2318892171a2 < fe2ead240c31e8d158713beca9d0681a6e6a53abfe2ead240c31e8d158713beca9d0681a6e6a53ab
linuxlinux>= e9109a92d2a95889498bed3719cd2318892171a2 < 40d7b3ed52449d36143bab8d3e70926aa61a60f440d7b3ed52449d36143bab8d3e70926aa61a60f4
linuxlinux>= e9109a92d2a95889498bed3719cd2318892171a2 < 27ab33854873e6fb958cb074681a0107cc2ecc4c27ab33854873e6fb958cb074681a0107cc2ecc4c
linuxlinux_kernel>= 0 < 6.10.3-16.10.3-1
linuxlinux_kernel>= 0 < 6.10.3-16.10.3-1
linuxlinux_kernel>= 0 < 6.8.0-50.516.8.0-50.51
linuxlinux_kernel>= 6.3 < 6.6.446.6.44
linuxlinux_kernel>= 6.7 < 6.10.36.10.3

CVSS provenance

nvdv3.13.3LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
osv5.5MEDIUM
vendor_ubuntu5.5MEDIUM
vendor_debian3.3LOW
vendor_redhat3.3LOW
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