Answer in brief
CVE-2024-49881 records a Unknown severity vulnerability in ext4: update orig_path in ext4_find_extent(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. 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), Siemens/RUGGEDCOM RST2428P (generic), Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=10809df84a4d868db61af621bae3658494165279 <ec0c0beb9b777cdd1edd7df9b36e0f3e67e2bdff || >=10809df84a4d868db61af621bae3658494165279 <6766937d0327000ac1b87c97bbecdd28b0dd6599 || >=10809df84a4d868db61af621bae3658494165279 <a9fcb1717d75061d3653ed69365c8d45331815cd || >=10809df84a4d868db61af621bae3658494165279 <6801ed1298204d16a38571091e31178bfdc3c679 || >=10809df84a4d868db61af621bae3658494165279 <f55ecc58d07a6c1f6d6d5b5af125c25f8da0bda2 || >=10809df84a4d868db61af621bae3658494165279 <b63481b3a388ee2df9e295f97273226140422a42 || >=10809df84a4d868db61af621bae3658494165279 <11b230100d6801c014fab2afabc8bdea304c1b96 || >=10809df84a4d868db61af621bae3658494165279 <5b4b2dcace35f618fe361a87bae6f0d13af31bc1 | ec0c0beb9b777cdd1edd7df9b36e0f3e67e2bdff, 6766937d0327000ac1b87c97bbecdd28b0dd6599, a9fcb1717d75061d3653ed69365c8d45331815cd, 6801ed1298204d16a38571091e31178bfdc3c679, f55ecc58d07a6c1f6d6d5b5af125c25f8da0bda2, b63481b3a388ee2df9e295f97273226140422a42, 11b230100d6801c014fab2afabc8bdea304c1b96, 5b4b2dcace35f618fe361a87bae6f0d13af31bc1 |
| Linux/Linuxgeneric | 3.18 | Not reported |
| Siemens/RUGGEDCOM RST2428Pgeneric | >=0 <V3.2 | V3.2 |
| Siemens/SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familygeneric | >=0 <V3.2 | V3.2 |
| Siemens/SCALANCE XCM-/XRM-/XCH-/XRH-300 familygeneric | >=0 <V3.2 | V3.2 |
| Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
| Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric | >=V3.1.0 <V3.1.5 | V3.1.5 |
Published upstream
Oct 21, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 15, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: update orig_path in ext4_find_extent() In ext4_find_extent(), if the path is not big enough, we free it and set *orig_path to NULL. But after reallocating and successfully initializing the path, we don't update *orig_path, in which case the caller gets a valid path but a NULL ppath, and this may cause a NULL pointer dereference or a path memory leak. For example: ext4_split_extent path = *ppath = 2000 ext4_find_extent if (depth > path[0].p_maxdepth) kfree(path = 2000); *orig_path = path = NULL; path = kcalloc() = 3000 ext4_split_extent_at(*ppath = NULL) path = *ppath; ex = path[depth].p_ext; // NULL pointer dereference! ================================================================== BUG: kernel NULL pointer dereference, address: 0000000000000010 CPU: 6 UID: 0 PID: 576 Comm: fsstress Not tainted 6.11.0-rc2-dirty #847 RIP: 0010:ext4_split_extent_at+0x6d/0x560 Call Trace: <TASK> ext4_split_extent.isra.0+0xcb/0x1b0 ext4_ext_convert_to_initialized+0x168/0x6c0 ext4_ext_handle_unwritten_extents+0x325/0x4d0 ext4_ext_map_blocks+0x520/0xdb0 ext4_map_blocks+0x2b0/0x690 ext4_iomap_begin+0x20e/0x2c0 [...] ================================================================== Therefore, *orig_path is updated when the extent lookup succeeds, so that the caller can safely use path or *ppath.
Quoted source text, attributed separately from HOL analysis.