Answer in brief
CVE-2023-53481 records a High severity (CVSS 7.8) vulnerability in ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
Answer in brief
CVE-2023-53481 records a High severity (CVSS 7.8) vulnerability in ubi: ubi_wl_put_peb: Fix infinite loop when wear-leveling work failed. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <b40d2fbf47af58377e898b5062077a47bb28a132 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <f006f596fe851c3b6aae60b79f89f89f0e515d2f || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <b5be23f6ae610bdb262160a1f294afee6d0e6a69 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <8a18856e074479bd050b01e688c58defadce7ab0 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <3afaaf6f5867dc4ad383808d4053f428ec7b867d || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <cc4bc532acda66189bddc03b3fe1ad689d9a48a2 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <5af1c643184a5d09ff5b3f334077a4d0a163c677 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <4d57a7333e26040f2b583983e1970d9d460e56b0 | b40d2fbf47af58377e898b5062077a47bb28a132, f006f596fe851c3b6aae60b79f89f89f0e515d2f, b5be23f6ae610bdb262160a1f294afee6d0e6a69, 8a18856e074479bd050b01e688c58defadce7ab0, 3afaaf6f5867dc4ad383808d4053f428ec7b867d, cc4bc532acda66189bddc03b3fe1ad689d9a48a2, 5af1c643184a5d09ff5b3f334077a4d0a163c677, 4d57a7333e26040f2b583983e1970d9d460e56b0 |
| Linux/Linuxgeneric | 2.6.25 | Not reported |
Published upstream
Oct 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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].
Quoted source text, attributed separately from HOL analysis.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <b40d2fbf47af58377e898b5062077a47bb28a132 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <f006f596fe851c3b6aae60b79f89f89f0e515d2f || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <b5be23f6ae610bdb262160a1f294afee6d0e6a69 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <8a18856e074479bd050b01e688c58defadce7ab0 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <3afaaf6f5867dc4ad383808d4053f428ec7b867d || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <cc4bc532acda66189bddc03b3fe1ad689d9a48a2 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <5af1c643184a5d09ff5b3f334077a4d0a163c677 || >=43f9b25a9cdd7b177f77f026b1461abd1abbd174 <4d57a7333e26040f2b583983e1970d9d460e56b0 | b40d2fbf47af58377e898b5062077a47bb28a132, f006f596fe851c3b6aae60b79f89f89f0e515d2f, b5be23f6ae610bdb262160a1f294afee6d0e6a69, 8a18856e074479bd050b01e688c58defadce7ab0, 3afaaf6f5867dc4ad383808d4053f428ec7b867d, cc4bc532acda66189bddc03b3fe1ad689d9a48a2, 5af1c643184a5d09ff5b3f334077a4d0a163c677, 4d57a7333e26040f2b583983e1970d9d460e56b0 |
| Linux/Linuxgeneric | 2.6.25 | Not reported |
Published upstream
Oct 1, 2025
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 4, 2026
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].
Quoted source text, attributed separately from HOL analysis.