| CVE |
Vendors |
Products |
Updated |
CVSS v3.1 |
| In the Linux kernel, the following vulnerability has been resolved:
scsi: scsi_transport_fc: Widen FPIN pname walker counter to u32
An adjacent Fibre Channel fabric actor that can deliver an FPIN ELS
frame to an lpfc or qla2xxx Linux initiator can trigger a non-return in
the generic FC transport. This is not a local userspace or IP network
path; the attacker must be able to inject fabric traffic, for example as
a compromised switch or fabric controller, or as a same-zone N_Port on a
fabric that permits source spoofing.
The Link-Integrity and Peer-Congestion FPIN walkers used a u8 loop
counter against the 32-bit on-wire pname_count field, and did not bound
pname_count by the descriptor body already validated by the TLV walker.
A pname_count of 256 therefore wraps the counter and keeps the loop
condition true indefinitely.
Factor the shared pname_list[] walk into one helper, widen the counter
to u32, and clamp pname_count against the entries that fit in the
descriptor body before iterating. |
| By permanently omitting the final control-response line, a malicious FTP,
IMAP, POP3, or SMTP server can exploit libcurl and completely bypass its
configured transfer timeout mechanism, indefinitely blocking all concurrent
transfers bound to the same multi-handle. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/amdgpu: cap ATOM command table nesting depth
Cap nesting at 32 levels with execute_depth and
return -ELOOP when exceeded. |
| In the Linux kernel, the following vulnerability has been resolved:
net: stmmac: dwmac1000: clear the RGMII status interrupt
Since commit 2e2c878a3141 ("net: stmmac: remove SGMII/RGMII/SMII
interrupt handling") nothing on the RGMII path reads GMAC_RGSMIIIS, so
RGSMIIIS stays pending behind GMAC_INT_MASK from the first link change
on. stmmac_resume() resets the MAC in stmmac_hw_setup(); the reset sets
GMAC_INT_MASK to 0 until dwmac1000_core_init() writes the mask again,
and the pending status storms the line:
dwmac_dma_interrupt: unexpected status 04000000
A register dump at the first message on ODROID-HC4 showed it:
core int_status 00000001 int_mask 00000000 pmt 00000000 rgsmiiis 0000000d
When the resume thread runs on the CPU that takes the MAC interrupt,
the storm starves it: a soft lockup, then a watchdog reset or a hang.
Read GMAC_RGSMIIIS in dwmac1000_irq_status() when the status is not
masked, as the driver did before 2e2c878a3141; the read clears it.
Wake-on-LAN resume from s2idle with the resume thread and the MAC
interrupt on one CPU: Helios64 (dwmac-rk), 7.3-rc6, soft-locked in 3 of
3 resumes without a fix and in 0 of 10 with this patch; it ran with an
out-of-tree dwmac-rk change that keeps the GMAC powered across suspend.
ODROID-HC4 (dwmac-meson8b): 0 of 10 with this patch, 2 of 2 without a
fix on a 7.3-rc5 build. irq_rgmii_n went up by one per resume. |
| Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 26.10.0rc1, twisted.mail.imap4.IMAP4Server reaches twisted.mail.imap4.parseNestedParens with a negative literal size in an authenticated SEARCH command after the client enters the selected mailbox state. The negative size moves the parser cursor below zero, and Python's negative indexing prevents the synchronous scanning loop from terminating. The loop freezes the single-threaded reactor, stopping other IMAP connections and any SMTP or POP3 services hosted in the same process until restart. This issue is fixed in version 26.10.0rc1. |
| In the Linux kernel, the following vulnerability has been resolved:
fs: avoid repeated scans in evict_inodes()
We observed hung tasks when users attempted to unmount a filesystem
after its disk had been removed while still in use. During device
removal, fs_bdev_mark_dead() calls evict_inodes() while holding s_umount.
Each time evict_inodes() drops s_inode_list_lock to reschedule, it
restarts the walk from the head of s_inodes. With many referenced inodes
at the head of the list, these restarts repeatedly scan the same inodes
without reclaiming them. This can keep s_umount held for a long time,
blocking concurrent umount attempts and triggering hung-task reports.
Keep the current inode, already marked I_FREEING, out of the disposal
batch until s_inode_list_lock is reacquired. Resume the walk from this
inode and dispose of it in a later batch or at the end of the walk.
The zero-refcount and state checks under i_lock allow this walker to
claim the inode by setting I_FREEING and removing it from the LRU.
Other reclaimers skip the inode, leaving this walker responsible for
eviction. Only evict() removes it from s_inodes, so keeping it out of
the disposal batch ensures that it remains on the list while the lock
is dropped. After reacquiring the lock, reading its current next pointer
accounts for concurrent removal of following inodes.
The existing inode lifetime rules prohibit acquiring a reference to an
inode marked I_FREEING or I_WILL_FREE. __iget() requires its caller to
hold i_lock and establish that taking a reference is valid. Inode lookup
and igrab() check these flags under i_lock when acquiring a reference
from zero. ihold() requires an existing reference, which would keep
i_count nonzero and prevent this walker from claiming the inode. These
rules already allow iput_final() and the inode shrinker to release
i_lock after setting I_FREEING and before eviction completes.
A temporary __iget() reference would also keep the inode on the list,
but its release must preserve last-reference handling. Another user can
acquire a reference, update lazy timestamps and drop its reference while
the pin is held. If the pin becomes the last reference, dropping it with
atomic_dec_and_test() and evicting directly bypasses iput()'s lazytime
handling and can lose those timestamp updates.
Releasing the pin with iput() preserves that handling, but does not
guarantee eviction. fs_bdev_mark_dead() runs with SB_ACTIVE set, so iput()
may retain the inode in cache, whereas evict_inodes() must evict eligible
zero-reference inodes. The inode may also have been freed when iput()
returns, so the walker cannot then use it to force eviction. Using
I_FREEING preserves the existing eviction behavior without introducing
an additional last-reference transition.
The xfstests auto group passed on ext4 and XFS with known unrelated
failures excluded. No new issues were observed, and the previously
reproducible hung task no longer occurs with this patch. |
| In EmberZNet 9.1.1 and earlier, a malformed Discover Attributes command can result in a loop with unreachable exit condition (infinite loop). These messages must come from a device that has already joined the network. Only devices supporting manufacturer-specific clusters are impacted. |
| An Integer Overflow vulnerability in the DPI certificate scanner in Juniper Networks Session Smart Router allows an unauthenticated remote attacker to cause a denial of service via a specially crafted TLS server certificate. |
| russh is a Rust SSH client and server library that includes an SSH agent protocol implementation. From 0.60.0 until 0.65.0, channel-open parsing accepts a peer-declared maximum_packet_size of zero and passes it into ChannelTx::poll_writable in russh/src/channels/io/tx.rs. The Channel::data, Channel::make_writer, and Channel::into_stream asynchronous write paths then calculate a writable size of zero and remain pending forever because window adjustments cannot satisfy a static zero packet maximum. An authenticated client can strand server writes, and a malicious server can strand client writes, allowing affected tasks, channels, and connections to accumulate without surfacing an error. This issue is fixed in version 0.65.0. |
| In the Linux kernel, the following vulnerability has been resolved:
x86/insn-eval: Fix shadowed segment index in get_seg_reg_override_idx()
Commit 45e1dccc0653 ("x86/insn: Simplify for_each_insn_prefix()") made
for_each_insn_prefix() declare its own loop counter named idx.
get_seg_reg_override_idx() keeps its result in a local of the same name,
so the assignments in the loop body now write the loop counter:
- the function always returns INAT_SEG_REG_DEFAULT, so FS and GS
overrides are ignored;
- a CS override sets the counter to INAT_SEG_REG_CS (2), the increment
makes it 3, and prefixes.bytes[3] holds the last prefix, 0x2e again,
so the loop never terminates.
The UMIP emulation reaches this from the #GP handler for user space: an
SGDT, SIDT or SMSW with a memory operand and a CS prefix leaves the task
spinning in the kernel, never returning to user space, with a SIGKILL
that is never delivered. Any user can thus tie up CPUs until reboot.
With an FS or GS prefix, the emulated result is written to the wrong
address.
Rename the internal macro iterator variable.
[ Lukas' original patch renamed the use site, I changed it to rename the
iterator in the macro instead, but left Lukas' commit message and
authorship - Linus ] |
| Loop with unreachable exit condition in the PKCS#12 key derivation (Pkcs12ParametersGenerator) in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply a PKCS#12 (PFX) file, or a PKCS#8 encrypted private key that uses a PKCS#12 password-based encryption algorithm, to cause a denial of service through CPU exhaustion via an iteration count of zero or below, because the derivation loop ran until its counter equalled the count, so for such a count it wrapped through about 2^32 iterations before the MAC or the password could be checked. A 75-byte PFX file with a negative MacData iteration count kept Pkcs12Store.Load busy for many minutes. |
| ApostropheCMS is an open-source Node.js content management system. In sanitize-html 2.18.0, when an <iframe> is not allowed and disallowedTagsMode is 'discard' (the defaults), its raw-text content is re-sanitized by a recursive call to sanitizeHtml(text, options). The recursion has no bound and starts each nested call with a fresh state. This vulnerability is fixed in 2.18.1. |
| Loop with unreachable exit condition in Pkcs12Store.GetCertificateChain in Legion of the Bouncy Castle Inc. bc-csharp before 2.7.0 allows an attacker who can supply a crafted PKCS#12 file to an application that loads it and requests a key entry's certificate chain to cause a denial of service, in which the call never returns and consumes CPU and memory until an OutOfMemoryException, via certificates whose issuer links form a cycle, for example two certificates whose AuthorityKeyIdentifier extensions each identify the other's public key. This happens because the chain-building loop stops only when no issuer is found or a certificate links to itself, and keeps no record of certificates already visited. The key-identifier links are followed without checking signatures. |
| Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow can enter an infinite loop while rewriting PDF pages. PdfParser.rewrite_pages() follows Parent relationships without detecting a cycle in the page tree. An attacker can supply a cyclic PDF to an application that appends an image to that PDF. This can hold the worker at full CPU and deny service. This issue is fixed in version 13.0.0. |
| Pillow is a Python imaging library. From 5.1.0 until 13.0.0, Pillow can exhaust resources while parsing an existing PDF during an append operation. PdfParser follows page-tree child references without cycle or duplication tracking and follows previous-trailer chains with only an exact repeated-offset guard, so deep or cyclic page trees and long chains of unique trailer offsets can exhaust the Python stack. Repeated non-cyclic /Kids references can also cause super-linear CPU and memory use. An attacker can supply such a PDF to an application that calls Image.save with PDF append enabled. This can raise an uncaught RecursionError or consume excessive CPU and memory before output is written, causing denial of service. This issue is fixed in version 13.0.0. |
| In the Linux kernel, the following vulnerability has been resolved:
drm/gma500: return errors from Oaktrail HDMI I2C reads
xfer_read() waits for the HDMI I2C transaction to reach
I2C_TRANSACTION_DONE, but it ignores both timeout and signal returns from
wait_for_completion_interruptible_timeout(). If the interrupt never
advances the transaction state, the loop can wait forever.
Return -ETIMEDOUT when the completion wait expires, propagate interrupted
waits, and make the I2C master_xfer callback return the first transfer
error instead of reporting a successful message count. |
| JPEGParser can enter an infinite loop while parsing a specially crafted or truncated stream. |
| In Eclipse OpenJ9 versions prior to 0.63.0, the JITServer component is vulnerable to a pre-authentication remote denial of service. When processing the initial 4-byte length field of an incoming TCP connection, an integer overflow in `MessageBuffer::computeRequiredCapacity()` causes the receiving compilation worker thread to enter an infinite loop consuming ~100% CPU. An unauthenticated remote attacker can exploit this by opening a small number of crafted TCP connections to exhaust the entire worker thread pool, silently halting compilation services for all connected client JVMs. |
| A security flaw has been discovered in VectifyAI PageIndex up to f50e52975313c6716c02b20a119577a1929decba. Affected by this vulnerability is the function toc_transformer of the file pageindex/page_index.py of the component PDF Table of Contents Handler. The manipulation results in infinite loop. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. This product operates on a rolling release basis, ensuring continuous delivery. Consequently, there are no version details for either affected or updated releases. |
| Allocation of Resources Without Limits or Throttling vulnerability in the HTTP/2 request body reader of mtrudel bandit allows an unauthenticated remote attacker to hold stream processes open indefinitely via WINDOW_UPDATE or empty SETTINGS frames sent while a Plug reads the request body.
Bandit.HTTP2.Stream.do_read_data/4 in lib/bandit/http2/stream.ex waits for each frame with a fresh read_timeout. A stream WINDOW_UPDATE, or the zero-delta window update that every empty SETTINGS frame delivers to all streams, ends the wait without delivering any body data, and the loop starts a new full countdown. A client that sends one of these 9-byte frames before each countdown expires keeps read_body blocked, together with the stream process and whatever the application holds while reading, for as long as it likes.
This issue affects bandit: from 1.4.0 before 1.14.0. |
