cbcvebase.
CVE-2023-53481
published 2025-10-01

CVE-2023-53481: In the Linux kernel, the following vulnerability has been resolved: ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed Following process…

PriorityP420medium5.5CVSS 3.1
AVLACLPRLUINSUCNINAH
EPSS
0.15%
4.7th percentile
In the Linux kernel, the following vulnerability has been resolved: ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed Following process will trigger an infinite loop in ubi_wl_put_peb(): ubifs_bgt ubi_bgt ubifs_leb_unmap ubi_leb_unmap ubi_eba_unmap_leb ubi_wl_put_peb wear_leveling_worker e1 = rb_entry(rb_first(&ubi->used) e2 = get_peb_for_wl(ubi) ubi_io_read_vid_hdr // return err (flash fault) out_error: ubi->move_from = ubi->move_to = NULL wl_entry_destroy(ubi, e1) ubi->lookuptbl[e->pnum] = NULL retry: e = ubi->lookuptbl[pnum]; // return NULL if (e == ubi->move_from) { // NULL == NULL gets true goto retry; // infinite loop !!! $ top PID USER PR NI VIRT RES SHR S %CPU %MEM COMMAND 7676 root 20 0 0 0 0 R 100.0 0.0 ubifs_bgt0_0 Fix it by: 1) Letting ubi_wl_put_peb() returns directly if wearl leveling entry has been removed from 'ubi->lookuptbl'. 2) Using 'ubi->wl_lock' protecting wl entry deletion to preventing an use-after-free problem for wl entry in ubi_wl_put_peb(). Fetch a reproducer in [Link].

Affected

21 ranges
VendorProductVersion rangeFixed in
debianlinux< linux 6.1.20-1 (bookworm)linux 6.1.20-1 (bookworm)
linuxlinux——
linuxlinux>= 43f9b25a9cdd7b177f77f026b1461abd1abbd174 < b40d2fbf47af58377e898b5062077a47bb28a132b40d2fbf47af58377e898b5062077a47bb28a132
linuxlinux>= 43f9b25a9cdd7b177f77f026b1461abd1abbd174 < f006f596fe851c3b6aae60b79f89f89f0e515d2ff006f596fe851c3b6aae60b79f89f89f0e515d2f
linuxlinux>= 43f9b25a9cdd7b177f77f026b1461abd1abbd174 < b5be23f6ae610bdb262160a1f294afee6d0e6a69b5be23f6ae610bdb262160a1f294afee6d0e6a69
linuxlinux>= 43f9b25a9cdd7b177f77f026b1461abd1abbd174 < 8a18856e074479bd050b01e688c58defadce7ab08a18856e074479bd050b01e688c58defadce7ab0
linuxlinux>= 43f9b25a9cdd7b177f77f026b1461abd1abbd174 < 3afaaf6f5867dc4ad383808d4053f428ec7b867d3afaaf6f5867dc4ad383808d4053f428ec7b867d
linuxlinux>= 43f9b25a9cdd7b177f77f026b1461abd1abbd174 < cc4bc532acda66189bddc03b3fe1ad689d9a48a2cc4bc532acda66189bddc03b3fe1ad689d9a48a2
linuxlinux>= 43f9b25a9cdd7b177f77f026b1461abd1abbd174 < 5af1c643184a5d09ff5b3f334077a4d0a163c6775af1c643184a5d09ff5b3f334077a4d0a163c677
linuxlinux>= 43f9b25a9cdd7b177f77f026b1461abd1abbd174 < 4d57a7333e26040f2b583983e1970d9d460e56b04d57a7333e26040f2b583983e1970d9d460e56b0
linuxlinux_kernel>= 0 < 5.10.178-15.10.178-1
linuxlinux_kernel>= 0 < 6.1.20-16.1.20-1
linuxlinux_kernel>= 0 < 6.1.20-16.1.20-1
linuxlinux_kernel>= 0 < 6.1.20-16.1.20-1
linuxlinux_kernel>= 2.6.25 < 4.14.3084.14.308
linuxlinux_kernel>= 4.15 < 4.19.2764.19.276
linuxlinux_kernel>= 4.20 < 5.4.2355.4.235
linuxlinux_kernel>= 5.11 < 5.15.1005.15.100
linuxlinux_kernel>= 5.16 < 6.1.186.1.18
linuxlinux_kernel>= 5.5 < 5.10.1735.10.173
linuxlinux_kernel>= 6.2 < 6.2.56.2.5

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_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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