Answer in brief
CVE-2024-49889 records a Unknown severity vulnerability in ext4: avoid use-after-free in ext4_ext_show_leaf(). 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.
Answer in brief
CVE-2024-49889 records a Unknown severity vulnerability in ext4: avoid use-after-free in ext4_ext_show_leaf(). 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 | >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <b0cb4561fc4284d04e69c8a66c8504928ab2484e || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <4999fed877bb64e3e7f9ab9996de2ca983c41928 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <2eba3b0cc5b8de624918d21f32b5b8db59a90b39 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <34b2096380ba475771971a778a478661a791aa15 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <8b114f2cc7dd5d36729d040b68432fbd0f0a8868 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <d483c7cc1796bd6a80e7b3a8fd494996260f6b67 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <4e2524ba2ca5f54bdbb9e5153bea00421ef653f5 | b0cb4561fc4284d04e69c8a66c8504928ab2484e, 4999fed877bb64e3e7f9ab9996de2ca983c41928, 2eba3b0cc5b8de624918d21f32b5b8db59a90b39, 34b2096380ba475771971a778a478661a791aa15, 8b114f2cc7dd5d36729d040b68432fbd0f0a8868, d483c7cc1796bd6a80e7b3a8fd494996260f6b67, 4e2524ba2ca5f54bdbb9e5153bea00421ef653f5 |
| 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 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
Oct 21, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid use-after-free in ext4_ext_show_leaf() In ext4_find_extent(), path may be freed by error or be reallocated, so using a previously saved *ppath may have been freed and thus may trigger use-after-free, as follows: ext4_split_extent path = *ppath; ext4_split_extent_at(ppath) path = ext4_find_extent(ppath) ext4_split_extent_at(ppath) // ext4_find_extent fails to free path // but zeroout succeeds ext4_ext_show_leaf(inode, path) eh = path[depth].p_hdr // path use-after-free !!! Similar to ext4_split_extent_at(), we use *ppath directly as an input to ext4_ext_show_leaf(). Fix a spelling error by the way. Same problem in ext4_ext_handle_unwritten_extents(). Since 'path' is only used in ext4_ext_show_leaf(), remove 'path' and use *ppath directly. This issue is triggered only when EXT_DEBUG is defined and therefore does not affect functionality.
Quoted source text, attributed separately from HOL analysis.
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 | >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <b0cb4561fc4284d04e69c8a66c8504928ab2484e || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <4999fed877bb64e3e7f9ab9996de2ca983c41928 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <2eba3b0cc5b8de624918d21f32b5b8db59a90b39 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <34b2096380ba475771971a778a478661a791aa15 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <8b114f2cc7dd5d36729d040b68432fbd0f0a8868 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <d483c7cc1796bd6a80e7b3a8fd494996260f6b67 || >=dfe5080939ea4686b3414b5d970a9b26733c57a4 <4e2524ba2ca5f54bdbb9e5153bea00421ef653f5 | b0cb4561fc4284d04e69c8a66c8504928ab2484e, 4999fed877bb64e3e7f9ab9996de2ca983c41928, 2eba3b0cc5b8de624918d21f32b5b8db59a90b39, 34b2096380ba475771971a778a478661a791aa15, 8b114f2cc7dd5d36729d040b68432fbd0f0a8868, d483c7cc1796bd6a80e7b3a8fd494996260f6b67, 4e2524ba2ca5f54bdbb9e5153bea00421ef653f5 |
| 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 TM MFP - GNU/Linux subsystemgeneric | >=0 <* | * |
Published upstream
Oct 21, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 5, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: ext4: avoid use-after-free in ext4_ext_show_leaf() In ext4_find_extent(), path may be freed by error or be reallocated, so using a previously saved *ppath may have been freed and thus may trigger use-after-free, as follows: ext4_split_extent path = *ppath; ext4_split_extent_at(ppath) path = ext4_find_extent(ppath) ext4_split_extent_at(ppath) // ext4_find_extent fails to free path // but zeroout succeeds ext4_ext_show_leaf(inode, path) eh = path[depth].p_hdr // path use-after-free !!! Similar to ext4_split_extent_at(), we use *ppath directly as an input to ext4_ext_show_leaf(). Fix a spelling error by the way. Same problem in ext4_ext_handle_unwritten_extents(). Since 'path' is only used in ext4_ext_show_leaf(), remove 'path' and use *ppath directly. This issue is triggered only when EXT_DEBUG is defined and therefore does not affect functionality.
Quoted source text, attributed separately from HOL analysis.