Answer in brief
CVE-2026-98722 records a Unknown severity vulnerability in mtd: block2mtd: Fix divide error when erase_size is zero. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), 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.
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), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=ea6d833a3fddcd1d60414d48f34c7f4fbe88608f <826170a49ca1315af6b293a02200585b1e2186d9 || >=ea6d833a3fddcd1d60414d48f34c7f4fbe88608f <a991c28066e7ba4da7450bb04478849f7ac6a14a || >=ea6d833a3fddcd1d60414d48f34c7f4fbe88608f <21d0f05989bf0d5cef57b467a7fa4feefbd7236a || >=ea6d833a3fddcd1d60414d48f34c7f4fbe88608f <b5965c4221165045e19736794ca5f48ae3d67142 | 826170a49ca1315af6b293a02200585b1e2186d9, a991c28066e7ba4da7450bb04478849f7ac6a14a, 21d0f05989bf0d5cef57b467a7fa4feefbd7236a, b5965c4221165045e19736794ca5f48ae3d67142 |
| Linux/Linuxgeneric | 3.15 | Not reported |
| Linux/Linuxgeneric | >=ea6d833a3fddcd1d60414d48f34c7f4fbe88608f <bff83b723e93acc788bd690dc4bc1f6f4356c35b || >=ea6d833a3fddcd1d60414d48f34c7f4fbe88608f <826170a49ca1315af6b293a02200585b1e2186d9 || >=ea6d833a3fddcd1d60414d48f34c7f4fbe88608f <a991c28066e7ba4da7450bb04478849f7ac6a14a || >=ea6d833a3fddcd1d60414d48f34c7f4fbe88608f <21d0f05989bf0d5cef57b467a7fa4feefbd7236a || >=ea6d833a3fddcd1d60414d48f34c7f4fbe88608f <b5965c4221165045e19736794ca5f48ae3d67142 | bff83b723e93acc788bd690dc4bc1f6f4356c35b, 826170a49ca1315af6b293a02200585b1e2186d9, a991c28066e7ba4da7450bb04478849f7ac6a14a, 21d0f05989bf0d5cef57b467a7fa4feefbd7236a, b5965c4221165045e19736794ca5f48ae3d67142 |
Published upstream
Oct 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 18, 2026
In the Linux kernel, the following vulnerability has been resolved: mtd: block2mtd: Fix divide error when erase_size is zero The erase size is parsed from the "block2mtd" module parameter and can be set to zero. add_device() then evaluates if (size % erase_size) with a zero divisor, which triggers a divide error: divide error: 0000 [#1] PREEMPT SMP PTI RIP: 0010:add_device drivers/mtd/devices/block2mtd.c:296 [inline] RIP: 0010:block2mtd_setup2+0x592/0xda0 drivers/mtd/devices/block2mtd.c:459 Call Trace: block2mtd_setup+0x27/0xe0 drivers/mtd/devices/block2mtd.c:476 param_attr_store+0x214/0x310 kernel/params.c:589 module_attr_store+0x65/0x90 kernel/params.c:904 kernfs_fop_write_iter+0x3a4/0x540 fs/kernfs/file.c:345 ... Reject a zero erase size before performing the modulo operation so the existing "erasesize must be a divisor of device size" error path reports the invalid argument and frees the device.
Quoted source text, attributed separately from HOL analysis.