IB/iser: reject a remote invalidation of an unregistered direction
In the Linux kernel, the following vulnerability has been resolved: IB/iser: reject a remote invalidation of an unregistered direction A write command whose data is sent entirely as immediate data is not registered. iser_reg_mem_fastreg() takes the DMA key path and leaves rdma_reg[ISER_DIR_OUT].desc at NULL, while iser_dma_map_task_data() has already set dir[ISER_DIR_OUT]. iser_check_remote_inv() looks at dir[] alone and hands the descriptor to iser_inv_desc(), which reads desc->sig_protected. A target that answers such a command with IB_WR_SEND_WITH_INV faults the initiator. Leaving those commands unregistered is deliberate. The same function already terminates the connection when a target sends a remote invalidation the initiator did not ask for. A target that invalidates a direction that was never registered is in the same class, so give it the same answer. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] CPU: 0 UID: 0 PID: 40 Comm: kworker/u8:2 Not tainted 7.2.0-rc5-ISERHOST-gf5098b6bae76-dirty #3 PREEMPT(lazy) Hardware name: QEMU Ubuntu 24.04 PC v2 (i440FX + PIIX, arch_caps fix, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: rxe_wq do_work RIP: 0010:iser_task_rsp+0x6d6/0xec0 Code: 48 c1 ea 03 80 3c 02 00 0f 85 ba 06 00 00 48 8b 9b 78 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 20 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 0
CVE-2026-98358
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98358
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "59caaed7a72a0e3750dfb84636dae6b781559310",
"lessThan": "198e4db9add54a50cce60a5d80b8f0ee5456b65a",
"versionType": "git"
},
{
"status": "affected",
"version": "59caaed7a72a0e3750dfb84636dae6b781559310",
"lessThan": "b9e37452915feaa8422af87dea5d0c16a7d1ff13",
"versionType": "git"
},
{
"status": "affected",
"version": "59caaed7a72a0e3750dfb84636dae6b781559310",
"lessThan": "19ddd4af7fce9200e70882f622011e9dd130f427",
"versionType": "git"
},
{
"status": "affected",
"version": "59caaed7a72a0e3750dfb84636dae6b781559310",
"lessThan": "9d145a2d8d6f8f2cc460b80df41870819048f2a0",
"versionType": "git"
},
{
"status": "affected",
"version": "59caaed7a72a0e3750dfb84636dae6b781559310",
"lessThan": "b4d278c91209931199db9c0836dc2e21a7593dad",
"versionType": "git"
},
{
"status": "affected",
"version": "59caaed7a72a0e3750dfb84636dae6b781559310",
"lessThan": "6ed3ebaff3345837f0528d85bd39ce573c7b9a41",
"versionType": "git"
},
{
"status": "affected",
"version": "59caaed7a72a0e3750dfb84636dae6b781559310",
"lessThan": "ceecf3f9c322fc6937a66682942a26ad13a34a07",
"versionType": "git"
},
{
"status": "affected",
"version": "59caaed7a72a0e3750dfb84636dae6b781559310",
"lessThan": "d85f0f0a7c85756fc992c70d869706f19dac9259",
"versionType": "git"
}
],
"programFiles": [
"drivers/infiniband/ulp/iser/iser_initiator.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "4.5"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "4.5",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.271",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.222",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.189",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.158",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.112",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.54",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.8",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/infiniband/ulp/iser/iser_initiator.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98358
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38436 · Revision 1
- Added to Heist Feed
- Publisher date