cbcvebase.
CVE-2024-56534
published 2024-12-27

CVE-2024-56534: In the Linux kernel, the following vulnerability has been resolved: isofs: avoid memory leak in iocharset A memleak was found as below: unreferenced object…

PriorityP417medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.25%
16.6th percentile
In the Linux kernel, the following vulnerability has been resolved: isofs: avoid memory leak in iocharset A memleak was found as below: unreferenced object 0xffff0000d10164d8 (size 8): comm "pool-udisksd", pid 108217, jiffies 4295408555 hex dump (first 8 bytes): 75 74 66 38 00 cc cc cc utf8.... backtrace (crc de430d31): [] kmemleak_alloc+0xb8/0xc8 [] __kmalloc_node_track_caller_noprof+0x380/0x474 [] kstrdup+0x70/0xfc [] isofs_parse_param+0x228/0x2c0 [isofs] [] vfs_parse_fs_param+0xf4/0x164 [] vfs_parse_fs_string+0x8c/0xd4 [] vfs_parse_monolithic_sep+0xb0/0xfc [] generic_parse_monolithic+0x30/0x3c [] parse_monolithic_mount_data+0x40/0x4c [] path_mount+0x6c4/0x9ec [] do_mount+0xac/0xc4 [] __arm64_sys_mount+0x16c/0x2b0 [] invoke_syscall+0x7c/0x104 [] el0_svc_common.constprop.1+0xe0/0x104 [] do_el0_svc+0x2c/0x38 [] el0_svc+0x3c/0x1b8 The opt->iocharset is freed inside the isofs_fill_super function, But there may be situations where it's not possible to enter this function. For example, in the get_tree_bdev_flags function,when encountering the situation where "Can't mount, would change RO state," In such a case, isofs_fill_super will not have the opportunity to be called,which means that opt->iocharset will not have the chance to be freed,ultimately leading to a memory leak. Let's move the memory freeing of opt->iocharset into isofs_free_fc function.

Affected

10 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.12.3-1 (forky)linux 6.12.3-1 (forky)
linuxlinux
linuxlinux>= 1b17a46c9243e9421ee1ac6d628604bbc4ae2201 < 34f090ddb3630a26e5a6b220bf3bfaf5c7b7039334f090ddb3630a26e5a6b220bf3bfaf5c7b70393
linuxlinux>= 1b17a46c9243e9421ee1ac6d628604bbc4ae2201 < 0fbab266ca8000333c966f5b58cb9b9cac6585730fbab266ca8000333c966f5b58cb9b9cac658573
linuxlinux>= 1b17a46c9243e9421ee1ac6d628604bbc4ae2201 < 0b5bbeee4de616a268db77e2f40f19ab010a367b0b5bbeee4de616a268db77e2f40f19ab010a367b
linuxlinux_kernel>= 0 < 6.12.3-16.12.3-1
linuxlinux_kernel>= 0 < 6.12.3-16.12.3-1
linuxlinux_kernel>= 0 < 6.11.0-18.186.11.0-18.18
linuxlinux_kernel>= 6.10 < 6.11.116.11.11
linuxlinux_kernel>= 6.12 < 6.12.26.12.2

CVSS provenance

nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_redhat5.5MEDIUM
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