Summary
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.
Security Fix(es):
* kernel: xfrm: espintcp: do not reuse an in-progress partial send (CVE-2026-52935)
* kernel: USB: serial: io_ti: fix heap overflow in get_manuf_info() (CVE-2026-53196)
* kernel: sctp: keep chunk->transport in step with the list it is queued on (CVE-2026-74588)
* kernel: sctp: validate cookie AUTH state before use (CVE-2026-74752)
* kernel: smb: client: reject a tree connect response whose byte count is too small (CVE-2026-89631)
* kernel: sctp: stop processing a packet once its association is deleted (CVE-2026-89479)
* kernel: perf: Fix addr_filter_ranges lifetime (CVE-2026-93817)
* kernel: netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state (CVE-2026-93288)
* kernel: kernel: strparser: use-after-free via msg_timer_work rearm after strp_done() cancellation ()
* kernel: netfilter: flowtable: hold reference on ct until flow is released (CVE-2026-98320)
Bug Fix(es) and Enhancement(s):
* gfs2 filesystem withdrawal rework [Rocky Linux-8] (JIRA:Rocky Linux-129363)
* Batch: z-stream xfrm - rhel-8.10.z (NST-Core-26W38) (JIRA:Rocky Linux-256684)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 8 | kernel-rt | 0:4.18.0-553.176.1.rt7.517.el8_10 |
Vulnerabilities 9
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Critical 9.8
sctp: keep chunk->transport in step with the list it is queued on
In the Linux kernel, the following vulnerability has been resolved: sctp: keep chunk->transport in step with the list it is queued on __sctp_outq_flush_rtx() moves a gap-acked chunk onto another transport's transmitted list without updating chunk->transport: …
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Critical 9.8
sctp: validate cookie AUTH state before use
In the Linux kernel, the following vulnerability has been resolved: sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIE_ECHO restores fixed-size AUTH fields directly from peer-controlled cookie bytes. A forged RANDOM len…
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Critical 9.8
sctp: stop processing a packet once its association is deleted
In the Linux kernel, the following vulnerability has been resolved: sctp: stop processing a packet once its association is deleted sctp_endpoint_bh_rcv() looks the association up only when chunk->asoc is NULL, and caches the result in chunk->asoc and chunk->t…
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Critical 9.1
smb: client: reject a tree connect response whose byte count is too small
In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon() bounds its strnlen() over the byte area with the server's ByteCount minus two, which for ByteCount 0 or 1 …
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High 7.8
xfrm: espintcp: do not reuse an in-progress partial send
In the Linux kernel, the following vulnerability has been resolved: xfrm: espintcp: do not reuse an in-progress partial send espintcp keeps a single in-flight transmit in ctx->partial. Before building a new sk_msg, espintcp_sendmsg() first tries to flush that…
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High 7.8
netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_log: wait for rcu grace period before freeing pernet state sashiko reports: "nfnl_log_net_exit() calls nf_log_unset(), which clears the logger pointer without an RCU grac…
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High 7.8
perf: Fix addr_filter_ranges lifetime
In the Linux kernel, the following vulnerability has been resolved: perf: Fix addr_filter_ranges lifetime Lee Jia Jie reported that since event::addr_filter_ranges is used under RCU, it should be RCU freed.
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High 7.8
netfilter: flowtable: hold reference on ct until flow is released
In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: hold reference on ct until flow is released nf_ct_put() releases the ct->ext area inmediately, the rcu typesafe semantics also allow to refer to the wrong conntrack from…
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Medium 6.8
USB: serial: io_ti: fix heap overflow in get_manuf_info()
In the Linux kernel, the following vulnerability has been resolved: USB: serial: io_ti: fix heap overflow in get_manuf_info() get_manuf_info() reads le16_to_cpu(rom_desc->Size) bytes from the device I2C EEPROM into a buffer allocated with kmalloc_obj(), which…
References
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2492098
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2492750
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2521384
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2524422
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2532089
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2532290
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2540391
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2540500
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2546494
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advisory
https://access.redhat.com/errata/RHSA-2026:85774